The 338’s: RUM, Lapua, & Edge

The 338’s: RUM, Lapua, and Edge
by Lucas Beitner

There is a great deal of interest in .338″ caliber cartridges for long range shooting. This is specifically due to high BC mass produced bullets available. While it takes a great deal of powder to push a 250gr to 300gr bullet at acceptable velocities for long range shooting, the performance has trumped the cost in the minds of many shooters (not to mention military and law enforcement world-wide). Recently, the most popular long range 338’s are the 338 Remington Ultra Mag, 338 Lapua mag, and 338 Edge. The first two are self explanatory, the Edge is a 338×300 Remington Ultra Mag. It is most commonly referred to as the 338″Edge” due to Shawn Carlock of Defensive Edge who is the biggest proponent of the cartridge and has, by far, the most experience with it. There are some other 338’s for long range, but I’ll mostly focus one these three for the sake of keeping this brief. These cartridges can be used in factory long actions and make a repeater. Even when using long, high BC bullets, like the 300gr SMK!

One common misconception is that these cartridges are end all, be all, 1000yd lasers. While the 1000yd performance is excellent, there are much more efficient ways of getting equal and in some cases better ballistic performance at 1000yds and less. For example you could fire a 168gr Berger VLD from a 7mm mag at 3100fps and have an expected drop of 22.25 MOA and drift of 5.25 MOA for a 10mph cross-wind at 1000yds. A 338 Lapua mag firing a 250gr Scenar at 2960 would have a drop of 24.25 MOA and 5.25 MOA windage for the same range/conditions. A Lapua mag firing a 300gr SMK at 2850fps would have a drop of 25 MOA and 4.75 MOA windage for the same range/conditions. If you want to see how these 338’s stack up to other cartridges, run the numbers through a ballistic calculator. For those who take large game at or near 1000yds the energy provided by these cartridges is ideal. Where the 338’s really shine  ballistically is well beyond the 1000yd mark. They have been used effectively and with accuracy out to 1 mile (1760yds) and beyond. Two of the major obstacles to shooting at extreme range are going sub-sonic (or even trans-sonic) and wind drift. A major part of the solution to both of these, is a higher than usual BC’s. Let’s consider some of the long range bullets available for the 338’s…

250gr Sierra Match king BC: .587 (above 2150fps) .606 (between 2149 and 1700fps)

250gr Lapua Lock Base BC: .662

250gr Lapua Scenar BC: .675

300gr Sierra Match king BC: .768

The popularity of this caliber will only insure that more high BC bullets will be developed in the future. Berger will be releasing two new bullets for the .338″, one of which is rumored to weigh 300gr and have a BC of around .855!

There is great debate about the velocities these cartridges can produce in relation to each other. I do not have the resources available to build and compare each of these cartridges with identical components so we’re left to speculate on what info is available. My Sierra Reloading Manual uses a 26″ test barrel for both the 338 RUM and the 338 Lapua. It gives essentially identical maximum velocities for the bullets in question, although the RUM was reaching them with a higher percentage of the powders tested. This seems counter intuitive because the capacities of these cartridges are virtually the same and the Lapua is rated at a maximum pressure of 69,000 psi, while the RUM is rated at a maximum of 64,500 psi (Vihta Vuori Reloading manual). I can’t confirm what pressures Sierra used to test these cartridges, but the data is scientifically acquired. The respective velocities of factory loaded ammo for these two cartridges would suggest that the Lapua has the velocity advantage. There is much debate in internet forums of how these cartridges stack up. The most popular consensus (from what I’ve gathered) is the 338 Edge is the fastest followed by the Lapua mag, with the 338 RUM not too far behind. I would argue that this is the most sensible conclusion since it follows the general capacity/pressure model (please do not take this to mean I view forum opinions as scientific data). The debate is somewhat irrelevant, since we’re talking about a spread of less than 100fps between them. The barrel’s design and length could possibly have a greater impact of MV than the cartridge itself. If you’re like me, the fastest load you test for a particular cartridge may not be the one you use. Other factors weigh in like accuracy (low ES and SD) as well as temperature sensitivity etc. It would be difficult to speculate what cartridge would provide the highest velocity while remaining “accurate”.

Many  wonder about how long a barrel should be for these cartridges. From what I can gather 28″-30″ is about optimal. This gives you the MV’s you expect and allows you to keep the weight manageable. Some have used up to 34″ barrels and are claim higher MV’s and better ballistic performance. I’ve heard that going from 28″ to 30″ only nets and extra 50fps. It may not seem like much for the weight of two inches of barrel. For some it may be worth it. Depending on how far you want to shoot your rifle, an extra 50fps could be just what you need. If 28″ barrels and the weight that comes with them is unattractive to you, I’d recommend looking into other cartridges (or re-evaluate your long range goals). There is no point in wasting powder in the form of muzzle blast. These are large cartridges that use slow burning powders and require long barrels.

The biggest difference in my opinion between these cartridges is reloading cost. They’ll use around the same amount of powder, and the bullets are the same, but the brass is another story. Brass for the Lapua is commonly found for around $195 for 100pc. The 338 RUM, and 338 Edge (wich uses 300 RUM brass) can be had for around $80 for 100pc. This is a big difference in reloading cost, although a straight across comparison would probably not be fair to the Lapua. It’s quite likely that the Lapua brand brass (one of only two brands currently available for the 338 Lapua) would last a couple more firings compared to the others. It’s also notable that to build a rifle in 338 lapua a standard magnum bolt face would not work, requiring a little more work by your gun smith (my smith only charged me around $30 for this, but your mileage may vary). The 338 Edge definitely gives the most bang for your buck. Some claim the Lapua is more accurate. If this has any merritt, it’s likely due to higher brass quality available for the Lapua. If one does a quick search you’ll quickly find excellent long range accuracy can be had by the RUM and Edge. It is my opinion that the smith you select to build your rifle, will by far have the greatest influence of the accuracy potential. That being said, I personally use Lapua brass when it’s available for a cartridge I’m loading.

Some other 338 cartridges that may catch your attention and deserve your consideration include: 338×378 Wby mag, 338 Kahn, 338×416 Rigby Improved, 338 Snipe Tac, 338 Allen Magnum, 338 Titan, and others. Any of these will ballistically outperform the RUM, Lapua, and Edge.


  • http://longrangeshooter.com Sean

    I have talked to Shawn Carlock about the 338 Edge and he claims that he shoots a 300gr SMK at 3200fps with a 3/4 inch group at 300 yards. Now I find this number to seem a bit on the optimistic side because I am pushed to get this MV with my 300 RUM using a 210gr Berger. But I cant rule this out because I don’t know what his internal workings are on his rifle.
    If he can shoot what he claims, than he is outperforming the Lapua by a step or two, BUT like I said, this claim is a bit hard for me to swallow. If you are interested in buying one of these there is nothing better than good old fashion research and you will find what will work the best.

  • Lucas

    Shawn has written an excellent article on the edge that can be found on his site. His standard load for the Edge runs at 2850fps or so, they can be pushed faster but this load was the most accurate at long range. Shawn also generally runs a 30″ barrel I believe.

    Guys have pushed the 300gr SMK really fast with long tubes for the Lapua as well, but it’s the exception rather than the rule. I’ve been amazed in the past with the difference in speed from factory to aftermarket barrels. If you burn that barrel up and go with an custom hand lapped 3-groove I think you’d see considerable MV jump. I’ve seen as much as 160fps on a 308 and only added an extra inch on the custom barrel.

    Your 300 RUM is tough to beat ballistically. At the shorter ranges you’d definately have an advantage over the Lapua, RUM etc when they’re loaded using the heavier longrange bullets.

  • http://http://http://www.LongRangeShooter.com Mike

    Interestingly enough, Mark Thompson shoots the longest recorded kill shot on camera that I have seen. He dumps several Prong Horns at 1000+ yards. See his Long Range video, “Nothing under 300 Yards” or his YouTube clips. He claims to use an off the counter .30/378 Weatherby Mag with Spot-on Optics! Hmmmm.

  • http://msn.com mt


  • http://http://http://http:// Lucas Beitner

    Thanks MT. I would like to point out the the figures on brass cost have changed in recent months (getting more expensive) and the trend is likely to continue. The relationship in cost of reloading for these cartridges will likely remain the same. I beleive Hornady has started making brass for the Lapua at less cost than Norma, or Lapua. I’ve only used Norma and Lapua brass so I don’t know how the quality of the Hornady brass stacks up. I was not impressed with the longevity of the Norma brass, but it was consistant, and accuracy was excellent.

  • Tim Groon

    I have recently tested a new load and found it to be extremely fast with no signs of pressure for the 338/300 or .338 EDGE. The rifle is wearing a 28 inch barrel with a custom 2 inch brake at the end. Barrel was made by Pac-Nor and the loads were made using the newly released Norma 300 RUM brass made to fit the .338. I loaded these with a new lot of H1000 and Winchester Large Rifle Mag primers. The reason I mention that this was a new lot of H1000 is that there are rumors floating on the web that the latest batches of H1000 are running about 2% faster than pre 2009 batches. I have been unable to verify this because my powder is all new and this was the first batch loaded with the Norma brass. The OAL for this rifle is 3.72 which sits about 15 thousaths off the rifling. With 92 grains of the new batch of H1000 and a 300 grain SMK I was averaging about 2900 fps! This brass has a capacity of about 2 grains less than the Remington brass measured with both water and powder comparisons. This was a first firing so I cannot say what will happen now that the brass has been fire formed. Quite frankly I think that loading the Norma brass with the same powder charge as the Remington Brass added almost 70 fps to my previous loads, but this may also be due to the rumored changes in the powder. Either way the primers were not flattened, the brass did not appear to the stressed and it reformed easily, no loose primer pockets after 1 firing. Recoil felt slightly more defined than the previous loads, but I think I will stick with this load until I feel that the brass is showing signs of pressure. *If you are already running a hot load with the H1000 watch for pressure signs, several sources including Shawn C have reported pressure signs with new batches*!

  • http://longrangeshooter.com Sean

    I have been tossing around turning my rifle into a .338 edge. It is a very good gun.

  • Tim Groon

    I would highly recomend it, the new Norma Brass is getting up there in price, but it is still cheaper than the Lapua .338 brass, and it will run at least 2800 fps with a 26 inch + barrel and the 300 Sierra Match King bullet. I run a Nightforce scope and it makes shooting out to 1400 yards almost predictable and boring! If I am dialing in around 5 MOA wind to reach a target at 800 yards with my 26 inch barreled .308 175 grain SMK bullets I just hold to target edge with the .338 EDGE and it hit every time! It stays supersonic out to somewhere past 1800 yards or better depending on your altitude. The only gun I have shot that shoots flatter is the .408 CheyTec but you have to take out a second morgage to play that game. I built my EDGE on a Savage FP10 300 Win Mag platform and if you don’t count the scope or base you can do it for under $1300 even if you use a high end stock.

  • http://longrangeshooter.com Sean

    hmm I say hmm.

  • Mike

    I have a nice Savage 110 Heavy Barrel , in 7mm rem. mag. Ive been shooting out to 750 yards with it hitting 12 inch targets cosinstantly . The gun came with a 24 in barrel . I am thinking of purchising a new barrel from PAC-Nor but to be honest i dont know squat about this company . What is your alls openion? Also i want the 34 inch barrel in stainless . Whats your openions ? And what is the best stock for the money ? Ive been shooting 168 Gr BTMHP out of it i do reload.

  • Lucas

    I personally wouldn’t recommend going much over 30″ on the barrel especially if it’s going to be a heavy contour. If you’re sticking with 7mm mag for the cartridge I think 28″ would be more than enough barrel to get excellent velocities even with the 180gr Berger VLD’s and slow burning powders like H1000 (I use a 26″ barrel on my 7wsm and get 3150fps with a 168gr Berger VLD). If you’re thinking about going with one of the big 338’s mentioned in the above article I would stick to 32″ or less (I went 28.5″ on my personal 338 Lapua with varmint contour). This will allow you to get very good MV’s.

    I don’t have any experience with Pac Nor but I hear good things from guys who do. My personal favorite is Benchmark Barrels. I’ve had good experiences with Shilen, and even Douglass. If you order a new barrel be sure to match the twist rate with the bullets you plan to use.

  • http://precisionlongrangehunter.com/forum/ubbthreads.php?ubb=cfrm Dave

    Back in ohh 98 or so I placed a call to Dan lilja. I was just getting started in long range shooting and didnt know much. I had a 7mm stw that I wanted to shoot 100 grain bullets out of at close to 3800 fps or better for extreme ranged shooting.

    Dan laughed and I found out how dumb, well ignorant I was. Hence the field of ballisitics and the interent and my hours of reading, searching, and talking to prominent experts in the fields of 1000 yard shooting.

    Dan had told me any case that has a capacity of 70 grains or more, at a minimum would require a 34 inch barrel to have nearly complete powder burn.

    I was using H1000 and Berger’s 180 vld bullet in his 34 inch barrel netting 3100 fps and it was ffffflllllaaaatttt and accurate.

    28 to 30 inch barrels with any of the aforementioned 338’s you talk about is primarily for weight because the case capacity at 90~100 grains will not completely burn all the powder. A 37 inch barrel comes very close to burning the powder in the faster of the powders used in these cases.

    If you are stationary hunting in a known area where it is easily accessible then you could opt for a long barrel and you will see the benefits of the longer barrel with higher velocities. This style of hunting generally goes way beyond 1000 yards and in some cases out to 2100 yards on a witnessed kill for a bull elk in Colorado.

    It depends greatly on your style of hunting what limits your weapon configuration. If you are hiking theres no way you will be lugging one of these “super guns” anywhere but from your truck to your bench which is 15 yards from where you parked or if you are packing it in on horses or atv other than that you will want to opt for something you can carry and hike with for extended time.

    Its a special style of hunting with these big guns and requires some specilized loading techniques to reach 2000 yards and beyond. I have watched the videos of you guys attempting to hit targets and hitting them at around 2k the difference between those huge sometimes weighing in at 60 lbs or more weapons is that 1500 yards is the new 100 yards for them and 2k is the norm for ranges and 2500 to 3000 is the challenge.

    These weapons serve one purpose and that is for extreme ranges and seldom start at 500 yards or even 1000 yards. They are built for way out there stuff. At those distances its impracticable to consider a cold bore one shot hit, the variables are just to extreme and require a spotter shot or two or three. At those distances your bullet flight path may put the bullet 200 feet or more above terrain and reading wind where there isnt any indicators is impossible and at those distances wind is the #1 leading cause of inaccuracy. Almost everything else can be accounted for and adjusted to compensate.

    The number of 338 high bc bullets is increasing and you can find some very unique bullets. I use the 225 accubond in my 338 Edge because ballistically as far as drop goes it is flatter than the 300 smk due to velocity difference of 300 fps giving the 225 the edge.

    The 33 caliber is something to witness when it connects with steel you will hear an audible confirmation at 1000 yards with them more so than any other caliber below .33. Mine is fun to shoot and it weighs more than it should but I have the ability to drive my 4 wheeler right to the stand so weight does play into it.

    The 338 Snipe-Tac and the 338 AllenMag are almost identical. Dave Viers who first necked down the 408 to 338 (about 4 years prior to Kirby Allen) generating his first ever 338/408 has done some spectacular things with his cartridge. The 300 smk can be launched at 3450 fps and the trajectory is amazing. I want to give credit where credit is due and that is to Dave Viers and his creation of the 338 Snipe-Tac took a lot of time and money to perfect Kirby Allen popularized this and named it after himself due to his affiliation with many forums. He basically took Dave’s idea and renamed it for himself which is pretty low down and I have little respect for Kirby Allen.

    I had some problems with PacNor and would stay away from them. I like Kreiger, Broughton, Bartlien, Shilen, lilja and Mike Rock as well as a few others but I had some serious problems with PacNor’s barrel on two occasions and will not use them.

  • http://http:// Lucas

    Here’s a great link… http://www.riflebarrels.com/articles/bullets_ballastics/long_barrel_velocity.htm

    You’ll notice that at the lengths we’re discussing for the 338’s you can gain 13 fps per inch of barrel with the 250gr bullets, and 18fps per inch of barrel with the 300gr bullets and this is in a slightly larger cartridge the 338/378 Wby Mag. When I cut 1.5″ off my 338 Lapua barrel to bring it down to 28.5″ I only lost 10fps with my load (using 97gr of Retumbo). The lengths I recommended were based on my personal experience and the information above. To recommend a length that gives complete powder burn would be rediculous for many applications for example you’d have to go at least 46″ for a 338/378 Wby using 300gr bullet according to Dan Lilja’s experiment. Barrel length is always a compromise. In the article I mention guys using 34″ barrels for the ballistic advantage and discussed the issue of weight. There are many extreme range shooters who use rifles set up much differently than I do. Anthing I write or advise I give will be taylored to “practical” long range shooting. In my view this means a rifle that is set up so it can be fired quickly from any position and at close range if the need arises. It must also be capable of accuracy out to the ranges of its intended use.

  • Dave

    I tried to bring forth that point on my site Lucas about the practicability of those “super guns”. I prefer the carry style weapons over the bench rest style weapons I talk about.

    There is little difference in fps with the longer barrels but people still go after them.

    I think more people hunt the “practical” way you mention than do the other way and for good reason.

    Most dont have the opportunity to have a “range” style setup that they go to year after year where nothing changes in distance. The practical way you mention is by far the most common.

    Those style weapons hold a special place in hunting which many do not use and your practical way is what most of us do.

    At 130 grains of powder+ it takes 3 to 5 grains to show a change in fps and requires the slowest of powders.

    10 fps difference for the ability to have a lighter rifle is well worth the trade off in my opinion and youll not see the difference.

  • http://http://http:// Lucas

    Well put Dave… My long range rifles are by no means light they range from 13.5 lbs to 15.5 lbs(with scope, bi-pod, ACI etc. I use them in competitions and in hunting. I can shoot them in any position and I don’t feel I give up much to the really heavy “prone only” rigs.

  • Dave

    One other thing, I use Nosler brass its hard to find but it is by far the best I have used. They match prep them and they show up looking all high quality. Not like the Remington brass with triangular shaped necks, dents in the shoulder, body, neck, folded over mouths and weights variance +/-5 grains.

    The runout is +/-.001~.0015 on the average and I have had some at .002 and a couple out of 50 shells at .003. The Remington brass by far has the worst characteristics you would want in brass for the 338 Edge.

    Out of 100 shells I ended up with 37 that were as close to each other as I could get them and that is a poor statistical average.

    I search the net at least once a month for the stores I use regularly for in stock Nosler brass and place the call immediately to put up a few more cases.

    I wish Winchester made it I use their brass for the 300 wsm I have. I have to neck turn (wont ever build another rifle like that) and the Norma brass I had was really soft compared to the Winchester.

    I wish I lived out west I could really enjoy a day out with you guys in the mountains shooting from range to range. Just to be out there in God’s glory would be fine for me.

  • http://http://http://http:// Lucas

    I’ve had simular issues with Norma brass being “soft”. If you’re ever out my way (Washington State) shoot me an e-mail and we’ll get out into the mountians for a day of long range shooting.

  • rossi

    can i get reloding dies for 338 edge and is it posible to to get
    reloding data using vihtavuori powder

  • http://longrangeshooter.com Sean

    Yes you can get dies but they are pretty pricey. I think they go for about 100 to 170 dollars and I will see if I can find a site that has them. As far as a load I will look into it and see what I can find. I would tell you to be looking into N165 or N170 and maybe N560 powder. As soon as I get a chance I will let you know.

  • Dave

    I used a set of 300 ultra dies. They Redding dies and I got the neck sizer only and then opened up the 300 dia to a little over the size of a seated bullet. You’ll need a carbide reamer to cut the dies but its a lot less than the cost of the dies and you end up with a neck sizer and can control the neck tension. Which in my Edge lead to a hell of a lot lower es’s.

    I can get more info if you are interested and they work.

  • http://http:// rossi

    thank you guys for this info I have 2 options in building 338
    I have 1 rem long action stanless and 1 cz 416 rigby I have not
    made up my mind wich to use i have to gather more info on both
    options thanks

  • Dave

    The CZ wont work the bolt face is .590 versus the bolt face dia of .532 for the 300 ultra case head dia.

    Youd have to have a good welder tig up the bolt face then recut it to match the 300 ultra dia.

    If you are opting for that with your CZ I’d suggest getting a custom action youll end up spending the same amount welding up and re cutting the bolt face.

  • rossi

    I did say I vant to build a 338 rifle remington would be used for
    338 edge cz would be used for 338×416 rigby improved there is no welding or bolt change

  • Dave

    I was mislead then as you had mentioned that you could get dies for the 338 edge which lead me to believe that you were considering building a 338 edge off of your cz 416 because your next post listed a rem and a cz 416 rigby. Course I might have not read between the lines enough or my clairvoyance wasn’t up to par 🙂

  • http://longrangeshooter.com Sean

    Sorry it took so long to get back to you but here is the website.
    The have dies for the 338 edge as well as other wild cats from the 300 ultra brass.

    6.5 MM UltraCat (6.5/338 Ultra)

    270 UltraCat (270/338 Ultra)

    8MM UltraCat (8MM/300 Ultra)

    338 UltraCat (338/300 Ultra) Alias= 338 Edge

    358 UltraCat (358/300 Ultra)

    416 UltraCat (416/300 Ultra)

    458 UltraCat (458/300 Ultra)

    hopes this helps

  • jp

    I have an AICS stock and a Stiller Tac300 long action with a .308 bolt sitting in my safe.
    I can‘t decide on what caliber to choose.

    This project started with the 284 winchester in mind(with a 175 sierra bullet or 180gr Berger)
    In the mean time, I bought an AIAW in .260 Rem.

    Now i wonder if the .284 winch is of real advantage over the .260?
    If not maybe I should move to a different caliber still in 7mm.

    Secondly, I was thinking about one of the 300 or 338(RUM,Edge,…) with a magnum bolt on the same platform (AICS LA and Stiller Tac300) that will allow me to reach longer distance (1500 meters).
    Caliber choice is difficult because i want to use the AICS mag.
    Max oal is 3,6″
    Thanks for your help

  • http://http://http://http://http:// Lucas

    I’ve got an AICS as well and I really like it! The 284 would likely have a slight advantage in the wind over the 260 if you used the high BC bullets you mention, although 140gr .264″ bullets are not far behind (check out the JLK’s)! If you went with a magnum bolt face the 7wsm is one of my favorite cartridges (my buddy feeds them through AI mags in a long action). A 7wsm will beat the 260 ballistically and in wind drift but you’ll experience shorter barrel life. The ultra’s are great but you’ll use allot more powder and experience more recoil. Check out the write up here on cartridge and caliber selection. Specific questions would be great in the forum were you can tap into the experience of many.

  • Greg

    hey im working on taking a 338 lapua and necking it down to a rem .260.
    any advise beside im going to blow myself up lol

  • http://http://http://http://http://http:// Lucas

    It sounds like fun, although I wouldn’t recommend it since the barrel life would be extremely short! Most bullets can only handle so much velocity/rpm’s before comming apart mid-flight. I would imagine you could get close to “loosing” bullets with a 264 mag, or a 6.5 WSM. A 6.5×338 Lapua is a bit extreme in my opinion.

  • Daveosok

    You’d be relegated to solids most likely. Any jacket/core bullet will spin apart far before you utilize the case capacity of the 338 LM.
    I know of a gunsmith who necked it down to a 7mm and used Richard Graves Wildcat bullets in it, they were 200 grain 7mm and it was finicky to find the node, a barrel burner, and the 7mm Ultra or 7mm Tomahawk posted similar velocities without the price for brass.
    Lutz Moeller and I had talked about a LM series style solid bullet like his LM 105 in weights around 200-230 grain but youd need around a 1:6 twist to stabilize it so the idea was abandoned.

  • Mark

    My 338 extreme without question will out perform anyJ of the other so called longrange 338’s.

  • http://longrangeshooter.com Sean

    What is the 338 extreme?

  • http://http://http://shoot-farther.com Lucas

    Here’s a link to some info on the 338 Extreme…


    I don’t believe it out performs the 338 Snipe-Tac and other 408 Chey Tac based 338 cartridges which are also based on the 505 Gibbs like the Extreme (I could be wrong). The bullet is the key to the ballistic performance of the 338 Extreme (solid 266gr bullet with a BC of .825) … I’ve used some 245gr lathe turned .338″ bullets with a claimed BC of .869 and it proved to be a very accurate G1 BC.

  • http://http:// Mark

    The bullet is not the key to this rifle. Mine actually shoots the Sierra 250gr match kings better than the copper lathe turned extreme engineering bullets. I’ve read alot of your comments reguarding this rifle and cartrige. Get off your computers, get your hands on one of these rifles and head to the range. If you’re a capable longrange shooter,you’ll walk away a believer. Good isn’t cheap,and cheap isn’t good

  • http://longrangeshooter.com Sean P

    I’ve read a lot of your comments regarding this rifle and cartridge

    I believe this is the first time we have talked about this rifle Mark

  • http://http://http://http://shoot-farther.com Lucas

    It’s nice that you decided to comment here Mark. No one is trying to knock your cartridge. You’ll notice in my comment earlier that I said your bullet was “the key to the ballistic performance of the 338 Extreme”. You replied with “the bullet is not the key to this rifle” which frankly doesn’t make since, I never said that, I was simply talking ballistics. I was trying to justify your previous comments that the “338 Extreme will out perform any of the other so called long range 338’s.” The only way I could justify your statment would be if you didn’t use such a bullet in cartridges like the 338 Snipe Tac, 338 Allen Magnum, 338 Big Baer, among others. This is why I said earlier that I didn’t think your cartridge was ballisticaly superior to these. I also said that I could be wrong, hoping you could provide some more info. The idea here is to get good information, not play favorites. Don’t be too concerned about me Mark, I was just doing a little long range shooting yesterday. I was also testing a prototype rifle built by Benchmark barrels just a little 308 but under 3/8 MOA at 500yds isn’t too shabby (1/8 MOA of vertical dispersion). Maybe I’ll post the review here as well as my own site. If you want to send a rifle with ammo… I’m game! I can gurantee Sean would be as well!

  • Brian

    Greetings to all…. I am building a 338RUM, here are a few specs… choat stock, Savage action(origionally 300rum) shilen barrel 32″. Any advice for the amount of twist prior to ordering the barrel? This will be my benchrest rifle with no intention of hunting. All I want is excellent accuracy like my 204 varmint rifle. Thank you for the help!

  • http://http://http://http://http://http://http://http://http://http://http://http://shoot-farther.com Lucas

    1:10 is the most commonly used… I’d go 1:11 and use bullets up to the 210gr Berger VLD. If you’re going to use the 240gr SMK’s a 1:9 would be in order.

  • http://http://http://http://http://http://http://http://http://http://http://http://http://shoot-farther.com Lucas

    Sorry about that… I had 30 cal. stuck in my head (I guess I’m thinking about my upcomming build). I used a 1:10 twist in my 338 Lapua and it worked very well for all the bullets I used including the 300gr SMK.

  • max burgess

    what tipe of muzzle brake work best on the 338s.

  • http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://shoot-farther.com Lucas

    There are many different designs. I’ve only used a coupple, both with large vertical ports. I’ve heard lots of good about the “muscle brake”.

  • DAVE

    Sean, I am actually taking delivery from Shawn Carlock on a 338 edge and I have also taken his class with an edge AKA why I’m buying one. Best rifle I have ever seen performance wise. and back in October you commented that you think the dies are over 100 dollars a set and I’m pretty sure Shawn will sell you a set for much less if you just call him and ask. He’s a really nice guy and builds one hell of a rifle too. I’ve know Shawn for 3 years now and he has done fair amount of work for me and every thing is always spot-on. The most seamless mussel brake installation you will ever see.

  • http://http:// DAVE

    DEFENSIVEEDGE.NET is his website, just check it out. He has spent thousands and thousands of hours with this round and he has all the stuff a guy could want to shoot a 338 edge. Save yourself the time on forums and just call him, the office number is on the website!

  • http://longrangeshooter.com Sean

    I run into Shawn from time to time but he wont reply to any email I send and most of the time is very short with me and I am not sure why. I have wanted to go shooting with him for some time but he always blows me off. If he has done work for you do you live close? Shawn lives within a 20 min drive from me.

  • Freddie Hunt

    Hi, I´m thinking of building a .338 Lapua. What action would you guys recomend? Im prepared to spend the money to get the most acurate one possible. Also, do any on you know of Callumn Fergison from Precision Rifles in UK, I will get the barrel from him, anyone had any experiences with him?
    This H1000 powder I´v heared so much about, wouold it work for my 25-06. Iv been using H4831 with 120 nosler partitions and Federal brass and its been very accurate but pretty slow. I want someting just as accurate but higher MVs. Any suggestons?
    Cheers Fred

  • http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://shoot-farther.com Lucas

    I built a Lapua from a Savage and it was very accurate (as accurate as 338 Lapua’s and Edges my buddies built on custom actions. I can recommend the Lawton as I’ve seen them used with great success. I’m sure there are many others that would work great. H1000 would probably be a little on the slow side for your 25-06, but it would work. My family has always used H4831 and H4350 for the 25-06 … Some powders offering good MV’s for your 25-06 are: Viht N165, RL-22, and H4831SC, you’d have to test for accuracy as I’ve not used them in that cartrdige.

  • http://http:// max burgess

    Freddie my memory Is bad but I thank 52gr of IMR 4831 IS kinda the old standard for a 25-06 Its a max load but IT has worked In ever 25-06 Ive owned.

  • Freddie Hunt

    Im planning on building a .338 Lapua. What action would you recomend to me for the very best accuracy? And do you think a 28″ barrel or a 30″ barrel?
    Also I have a 25-06 rem. I am loading H4831 with 120gr nosler partition. It is very accurate but not very fast, can you recomend a powder that will give me the same accuracy but with a higher MV?

  • http://http:// Freddie Hunt

    Sorry, I just posted the same comment again, I didnt realise the 1st one worked.
    Lucus, what MVs was your family getting with the H4831? I cant get higher than 2850 with out the pressure getting too high. Or maybe by barrel is too short. Its a Tikka off the shelf varmint 24″ heavy barrel. Fantastic rifle, putting the bullet through the same hole at 100yds but like I said, I want it faster!!! haha

  • http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://http://shoot-farther.com Lucas

    We were using 100gr bullets and getting between 3000 and 3150 fps depending on the rifle and exact load used. Some were factory remingtons with 22″ barrels, one had a 24″ barrel. You could experiment with RL 17 in some cartridges substantial MV gains are attainable. I always load more for accuracy than speed.