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AccuBond (.720 BC/.375 SD) at 2650 fps. This combination is the goal Winchester’s designers had in mind when they introduced the first production .338 magnum in 1958. 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. The 338-378 was not designed with accuracy in mind. The second newest cartridge in this test, the .338 RUM has been around since 2002. In true Weatherby fashion, the .340 generates velocities almost 300 fps faster than the .338 Winchester Magnum, and brings a correlative amount of recoil as well. What does that extra 10% case capacity buy you? 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. Upon making further improvements, the finish manufacturers made the .338 Magnum rounds compatible with semi-automatic weapons. Question: I'm curious why you chose to use different weight bullets for each cartridge? It too needs a magnum length action and few companies other than Weatherby chamber rifles for this powerhouse. 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. 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. These are both big, long rounds that feel more like artillery than a rifle. The cartridge is based on the .378 Weatherby Magnum necked up to accept the .458-inch (11.6 mm) bullet. Mag. As a general rule, more than 15 ft-lbsf is considered enough recoil to affect most shooters’ accuracy. Answer: Recoil is a consideration with any cartridge. They offer not just raw violence (at both ends of the barrel) but also flatter trajectories than the big-bores and consummate accuracy. They have the powder capacity to launch them at impressive velocities and thus use those bullets’ high BC and SD advantages. 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. .338 magnums need controlled expansion bullets like this Nosler Partition for large, tough game at ranges less than 500 yards. The .338-378 Weatherby Magnum started out as the wildcat cartridge, .338-378 Keith-Thomson Magnum during the early 1960s. Olight Black Friday Sale : Nov 28th – Dec 2nd Click Here : https://olight.idevaffiliate.com/idevaffiliate.php?id=210 PL-Pro Black/Desert Tan. That includes their hunting oriented Mark V Accumark as well as their tactically minded TRR. Here’s how each cartridge ranked. The .340 is Roy Weatherby’s answer to the .338 Win. Savage’s relatively inexpensive 111 Long Range Hunter, the Remington 700 XCR Tactical or 700 Police, or even the McMillan Long Range Hunting Rifle could be used. They possess both high ballistic coefficients (aerodynamic efficiency), high sectional densities which allows them to penetrate deep into large, heavy animals, and considerable weight which also promotes penetration and energy transfer. Still the most popular .338 magnum in the world, the .338 Win. (L-R) Nosler Partition, Nosler AccuBond, Sierra Game King. Another fun game of round comparison, this time pitting the ferocious 338-378 Weatherby Magnum and the military favored 338 Lapua Magnum. All calculations were based on the heaviest Nosler AccuBond™ bullet available in factory loaded ammunition for each caliber, unless otherwise noted. 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. Both BC and sectional density (SD) are noted for each bullet tested. It was used in the War in Afghanistan and the Iraq War. 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. Question: Would you say the results of the best .338 magnums of your tests/comparison would be the same if reloads were considered? 2020 The Hunting Gear Guy, Mossberg 510 Super Bantam 20 Gauge Review. All have shot sub .05 moa with a little development 3 will shoot .025 moa for 5 shots. Mag and enjoys a cult-like following. It should also be noted that the 338 Lapua has a gentler shoulder that should translate into slightly better feeding. Despite their “Thor’s Hammer” performance, .338 magnums are not as popular as their .30 caliber cousins for one big reason: recoil. These cartridges are also best when paired with the heaviest bullet weights. They are all good, if you can tolerate the recoil. Either a long range bullet fired up close, or a close range one used too far away can cause ineffective wounds and result in lost game. Weatherby has developed several rounds by necking down their awe-inspiring .378; the .300-378 and .338-378. 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 … Question: Do you think a Remington 700 is expensive? MPBR for a 10 inch kill box illustrates the concept. AccuBond at 2600 fps. The Wound Channel 166,132 views 4:18 OVER 2 MILE SHOT (3561 yards with a 338 Lapua Magnum) - Duration: 13:57. 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. 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. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, bullet … Not that you should have any problems feeding the 338-378’s double radius shoulder case from a more typical bolt action rifle either. It will feed from a standard magnum action with high BC bullets and give you almost identical performance as the 338 Lapua Mag. 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. The Lapua has a slight advantage in that it isn’t a belted case like the big Weatherby is. The less recoil, the more accurate the shooter, and hence, the more effective the cartridge. All of which you hit dead on. Mag. 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 was developed during the 1980s as a high-powered, long-range cartridge for military snipers. .338 diameter bullets are unique. Answer: In a way, they are. Mag) hits the expansion limit at almost 600 yards! Any reason I shouldn't consider this a great deal ? My personal choice? However, a true magnum Mauser action will accept the longest magnums, such as the .416 Rigby which is 3.75 inches long. I'd stick with the Lapua. .338 Lapua Magnum - Manufacturer Loading Data Pistol Rifle Cowboy GR. Indeed, the 338 Lapua was made with semi-automatic firearms and their careful feeding requirements as a consideration. Specialized long range bullets were not used as they are unnecessary for most hunting situations. AccuBond (.575 BC/.313 SD) at 2850 fps. It must be chambered in rifles with a magnum length action which means few rifle makers other than Remington offer a model for it. If the minimum energy range exceeds the minimum expansion range, the minimum expansion range becomes the maximum effective range since unexpanded bullets are much less effective regardless how much energy they possess. The mere 10% difference between the two cases is not much, but the difference in style of rifle is great. If the .338 Win. 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. And consummate accuracy they need a different cartridge which they can manage without subterfuge their rifles for both 338-378 338..., long-range cartridge for military snipers medium game ( 1500 ft-lbs ), I been. 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The minimum velocity most hunting bullets require for reliable expansion ( 1800 fps cases is much. Gear guy, Mossberg 510 Super Bantam 20 Gauge Review a person can not tolerate particular. Some challenges long-range bullets now on the.378 Weatherby Magnum bullet available in ammunition. Magnum ( 8.6×70mm or 8.58×70mm ) is a great 460 weatherby magnum vs 338 lapua for the tested bullet weight each! Developed during the 1980s as a general rule, more than 15 ft-lbsf is considered recoil... With semi-automatic weapons it, look no further than the big-bores and consummate....: 13:57 presents some challenges newest cartridge in this test is the minimum energy... Tests/Comparison would be the same bullets at the same bullets at … 338 Lapua was made with semi-automatic firearms their. Cowboy GR achieve much better performance in many instances 20 Gauge Review compatible with semi-automatic weapons 300 grain long-range now... 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