250 gr. These days, it’s very different. Answer: In a way, they are. The second newest cartridge in this test, the .338 RUM has been around since 2002. .375 H&H Magnum (L), .338 Winchester Magnum (R). If you’re looking at these two rounds, the 338 RUM and 338 Edge are both worth looking at as well, but for today, I’ll just be focusing on the Lapua and Weatherby 338’s. They require a hunter to understand bullet construction and terminal performance in depth, especially with cartridges on the power scale’s upper end. The .338-378 has devoted fans in the long-range hunting sub-culture, but only exceeded the .340 Weatherby’s muzzle velocity by 119 fps; a small reward for the huge recoil it produces. The 338 Lapua has a case capacity of 114.2 gr of water, while the 340 Weatherby- 98.0 gr, 338 Remington Ultra Mag- 113 gr., and the capacity of 338-378 Weatherby is 125 gr. As yet, no one offers a 250 grain AccuBond in factory ammo for the 33 Nosler, and it would have scored closer to the .338 RUM with a 250. Military acceptance of the 338 Lapua as an extended range sniping round has increased civilian interest and now there are lots of tactical and hunting rifles becoming available in 338 Lapua. The .338 Winchester Magnum became the iconic elk, brown bear, and moose cartridge, and it spawned competitors as the market demanded ever faster velocities. In the past, one had to order them from gun makers such as Rigby or Dakota Arms, but now CZ offers them on a production basis, although the CZ magnum is still a bit more expensive than their standard-length actions. 225 gr. While there is some overlap in the applications of these rounds, there are also going to be certain shooting situations where one might be better suited than the other. Keith wanted something which would hammer through a quartering-away elk (his favorite game) out to 300 or 400 yards and realized a .338 caliber bullet driven fast enough would get the job done. Weatherby has developed several rounds by necking down their awe-inspiring .378; the .300-378 and .338-378. I have the opportunity to purchase a Mark V Accumark in 378-338 Mag used. These are good bullet choices for shots inside 500 yards: Barnes TSX/TTSX, Swift Scirocco, Swift A-Frame, Nosler Partition, Nosler AccuBond, Nosler E-Tip, Woodleigh Weldcore, Hornady GMX, Hornady Interbond, and North Fork. 338 Lapua Magnum is typically used in heavier tactical or target rifles such as the PGW Timberwolf, TRG-42, Accuracy International, McMillan TAC-338, Savage 110BA, or Remington MSR but there are a few rifles that could be hunted with. That includes their hunting oriented Mark V Accumark as well as their tactically minded TRR. Not that you should have any problems feeding the 338-378’s double radius shoulder case from a more typical bolt action rifle either. Calculations were corrected to standard temperature (59F/15C) and pressure (29.92 inHg/1013 mbar) at sea level. One point for each ft-lbsf recoil less than 15, and one point deducted for every ft-lbsf greater than 15. Now that 100 fps won’t make spit for difference in the 250 grain partition because its BC sucks so much, but if you’re going long range and firing a slippery Berger hybrid OTM, that extra velocity will translate into some extra range for the Weatherby. The author analyzed six .338 caliber magnum cartridges (.338 Winchester Magnum, .340 Weatherby, .338-378 Weatherby, .338 Remington Ultra Mag., 33 Nosler, and .338 Lapua) for trajectory, effective range, and recoil with modern ballistic software available free online from shooterscalculator.com. All have shot sub .05 moa with a little development 3 will shoot .025 moa for 5 shots. .338 Lapua Magnum - Manufacturer Loading Data Pistol Rifle Cowboy GR. In the early days, the .338 lapua sniper cartridge was made to ground itself on a .378 Weatherby case, but was soon altered for more precision and penetration power. Finally, the gory details. That 9.5% more capacity does translate into faster speeds. The .460 Weatherby Magnum is a belted, bottlenecked rifle cartridge, developed by Roy Weatherby in 1957. The 338-378 Keith-Thomson Magnum is a quarter of an inch shorter than the full length 338-378 Weatherby Magnum, this was because … Both of these cases are high quality, and the cost of firing these big rifles means that any cost savings on brass is negligible. Despite their “Thor’s Hammer” performance, .338 magnums are not as popular as their .30 caliber cousins for one big reason: recoil. This put some cartridges at a disadvantage since only factory advertised velocities were used. Question: Would you say the results of the best .338 magnums of your tests/comparison would be the same if reloads were considered? The cartridge is based on the .378 Weatherby Magnum necked up to accept the .458-inch (11.6 mm) bullet. The author acknowledges hand loaders can achieve much better performance in many instances. Numbers obtained from Federal (338 Lapua) and Weatherby (338-378 Weatherby), 338 Lapua with 250 grain bullet: 2950 fps at the muzzle, 338 Lapua with 300 grain bullet: 2580 fps at the muzzle, 338 Weatherby with 250 grain bullet: 3060 fps at muzzle. It should also be noted that the 338 Lapua has a gentler shoulder that should translate into slightly better feeding. Here’s how each cartridge ranked. As a general rule, more than 15 ft-lbsf is considered enough recoil to affect most shooters’ accuracy. A hunter must really want to shoot an elk at 800 yards to consider anything above the .338 Win. If a person cannot tolerate a particular cartridges un-braked recoil, they need a different cartridge which they can manage without subterfuge. Recoil calculations were based on a nine pound rifle weight. Which cartridge to go for is largely a question of rifle. I own 5 Weatherby Accumarks and traded another. proved good enough for old Elmer Keith, it’s good enough for me. The less recoil, the more accurate the shooter, and hence, the more effective the cartridge. They have the powder capacity to launch them at impressive velocities and thus use those bullets’ high BC and SD advantages. Like the .338 Lapua, it is a great candidate for the 300 grain long-range bullets now on the market. The 338-378 was not designed with accuracy in mind. The mere 10% difference between the two cases is not much, but the difference in style of rifle is great. The .340 is Roy Weatherby’s answer to the .338 Win. Keith and Thomson are Elmer Keith and R.W. Now let’s go. The Lapua has a slight advantage in that it isn’t a belted case like the big Weatherby is. These cartridges are also best when paired with the heaviest bullet weights. Adriel has been hunting all his life, enjoys shooting 3 gun, is a trainer for Project Mapleseed and tries to apply a practical point of views to his reviews. Mag) hits the expansion limit at almost 600 yards! Question: I'm curious why you chose to use different weight bullets for each cartridge? Driving a 250-grain bullet to 2940 fps, for over 4,800 ft.-lbs. Specialized long range bullets were not used as they are unnecessary for most hunting situations. The.340 Weatherby Magnum makes about 100fps less velocity than the Lapua, but with 15-20% less powder..338 Weatherby fires a 160gn at 3600fps, the Lapua at 3500fps. If you, the hunter, need or want it, look no further than the .338 caliber magnums. Functionally, it doesn’t matter a whole heck of a lot, but it can be a bit more troublesome when it comes to reloading the cases. As a big bad round capable of taking big game from a distance, it’s growing in popularity faster than the 338-378 Weatherby, and in the near future it looks like it’ll become the more popular choice. It delivers high performance at a fraction of its .338 Lapua competitors. Any rifle firing these rounds with a muzzle brake will require hearing protection worn even while hunting, while unbraked models will come with gobs of punishing recoil. It has the case capacity to launch the heaviest .338 caliber bullets (300 grain) at useful velocities and is a stellar long-range cartridge for large game. It will feed from a standard magnum action with high BC bullets and give you almost identical performance as the 338 Lapua Mag. All the others require expensive magnum-action rifles (except 33 Nosler), hit you like a five-pound ball-peen hammer, and require slavish devotion to find ammunition. They are all good, if you can tolerate the recoil. I know I'm going to get flak for this, but it's true to an extent. it's illegal to own a firearm chambered for any military used cartridge, so the .338 lapua magnum and the .408 cheytac are illegal, but thee 460 weatherby might be legal as I said, any round not being used by the a military is legal for the laws I've seen. The main factor is to know the maximum and minimum anticipated impact velocities and the intended game, then select a bullet which is reliable under those conditions. Comes with dies and some brass plus a Leupold VX 111 3.5-10x40mm for a $1,000 bucks . MPBR for a 10 inch kill box illustrates the concept. The .338 Lapua Magnum was initially grounded on a .378 Weatherby Magnum case, necked down to accept 0.338-inch (8.6 mm) bullets because this diameter presents optimal sectional density and penetrating capabilities. *.338 Lapua features a Chrome Moly barrel GUARANTEED SUB-MOA ACCURACY All Mark V® rifles are guaranteed to shoot a 3-shot group of .99” or less at 100 yards (SUB-MOA) from a cold barrel when used with Weatherby® factory or premium ammunition within Two-Years of Verified Purchase Date to Original Purchaser. Mag, the “softest” here, slaps the shooter as hard as a .375 H&H Magnum, while the .338-378 and .338 Lapua are close to .416 Rigby territory. Olight Black Friday Sale : Nov 28th – Dec 2nd Click Here : https://olight.idevaffiliate.com/idevaffiliate.php?id=210 PL-Pro Black/Desert Tan. Use the right tool for the right job. The .338-378 Weatherby is currently the most powerful .338” factory cartridge. Mag. Both BC and sectional density (SD) are noted for each bullet tested. Developed for military snipers to bridge the gap between .300 Winchester Magnum and .50 BMG, at first glance, the .338 Lapua seems to define “over kill” in a hunting cartridge. All things equal (they seldom ever are), I’d go with the .338 Win. Their superior sectional densities combined with high velocity and bullet weight anchor these killer bears like few other cartridges. In today's video, I will take a look at the Weatherby Mark V chambered in 460 Weatherby Magnum. 250 gr. The .338 Win. The .300 Win Mag vs .338 Lapua Magnum is an interesting comparison, and we think provides some interesting points of discussion. Weatherby’s cases are also fairly readily available and are pretty close to the same price: $3.50/case for 338 Lapua vs $3.50/case for Weatherby 338-378 depending where you pick them up from. It scored just behind the .340 Weatherby and has the least recoil among the cartridges tested. The Lapua comes with a case capacity of 114.2 gr of water, while the 338-378 Weatherby holds 9.5% more at 125 gr of water. It too needs a magnum length action and few companies other than Weatherby chamber rifles for this powerhouse. The Wound Channel 166,132 views 4:18 OVER 2 MILE SHOT (3561 yards with a 338 Lapua Magnum) - Duration: 13:57. Just don’t expect those slugs to hold up if they hit a bull elk’s shoulder at fifty yards. AccuBond (.720 BC/.375 SD) at 2650 fps. This is the real … Great article. It hits the shooter the least, has proven itself in both Alaska and Africa for decades, and ammunition is available most places. Still the most popular .338 magnum in the world, the .338 Win. 338 Norma. My 28” #3 contour barrel is hand-lapped, free-floated and cut-rifled to extract top velocities and energy from .30-378 Weatherby Magnum, .338 Lapua Magnum and .338-378 Weatherby Magnum chamberings. (L-R) .308 Win., .340 Weatherby, 9x19mm Luger. New Company Ritter & Stark Guarantees Rifles Shoot Half MOA or Better Ritter & Stark is a new firm looking to expand Austria’s small arms legacy with its very first product, a high-precision long-range bolt-action rifle for military and police shooters as well … The .338 Lapua Magnum was developed in the eighties specifically to provide Military snipers a round capable of delivering high powered impacts to targets at extended range. Find the Hunting Gear guy on YouTube, © What does that extra 10% case capacity buy you? I don't think I have ever seen a .338 without a muzzle brake. 250 gr. The VSO Gun Channel is an educational resource of VSO Media LLC, a research and development/ Testing Evaluation … The.338-.378 Weatherby makes about 100-150fps more velocity than the Lapua, but with 10-15% more powder. The newest .338 magnum, the 33 Nosler arrived on the market in 2016. Hmmmm, Nosler bullets and Nosler winner....just saying. 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