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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
anything between the 338 Edge and the 338 AM?
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<blockquote data-quote="Fiftydriver" data-source="post: 189638" data-attributes="member: 10"><p>The 338 AI or my 338 Allen Xpress will match or exceed anything the 338-378 will offer with a bit less powder. THe reason is because the Lapua case will handle much more chamber pressure and still offer longer case life then the WBY/Norma case.</p><p> </p><p>If you are not worried about case life, the 338-378 will out perform the Lapua Improved and Allen Xpress simply because of its larger case capacity but the primer pockets will generally let loose on the first or second firing at levels up where the Allen Xpress runs.</p><p> </p><p>I would agree with most said about the 338 AI but from my testing, I feel that 3000 fps with a 300 gr SMK is pushing things pretty hard in this class of chambering as far as pressure is concerned. The Edge and standard Lapua will get you 2800 to 2850 fps. SOme will hit 2900 fps on the extreme.</p><p> </p><p>The Improved Lapua will on average add around 100 fps to this. Around 2900 to 2950 fps on average. I am not saying some rifles will not hit 3000 fps but I would say this would be a relatively limited thing in this class of chambering.</p><p> </p><p>The reason I say this is because, in most cases, even in a 36" barrel, the 338 AI will only hit around 3050 fps with max loads, about the same as the 338-378 Wby.</p><p> </p><p>SO basically, you have the Edge and Lapua at 2850 fps with the 300 gr SMK. The 338 Allen Xpress in the 2950 fps on average with same bullet and then jumping up to the 338 AM at 3250 fps, all in 30" barrels. There is still a big jump from the Allen Xpress to the Allen Magnum but there are options between the two.</p><p> </p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 189638, member: 10"] The 338 AI or my 338 Allen Xpress will match or exceed anything the 338-378 will offer with a bit less powder. THe reason is because the Lapua case will handle much more chamber pressure and still offer longer case life then the WBY/Norma case. If you are not worried about case life, the 338-378 will out perform the Lapua Improved and Allen Xpress simply because of its larger case capacity but the primer pockets will generally let loose on the first or second firing at levels up where the Allen Xpress runs. I would agree with most said about the 338 AI but from my testing, I feel that 3000 fps with a 300 gr SMK is pushing things pretty hard in this class of chambering as far as pressure is concerned. The Edge and standard Lapua will get you 2800 to 2850 fps. SOme will hit 2900 fps on the extreme. The Improved Lapua will on average add around 100 fps to this. Around 2900 to 2950 fps on average. I am not saying some rifles will not hit 3000 fps but I would say this would be a relatively limited thing in this class of chambering. The reason I say this is because, in most cases, even in a 36" barrel, the 338 AI will only hit around 3050 fps with max loads, about the same as the 338-378 Wby. SO basically, you have the Edge and Lapua at 2850 fps with the 300 gr SMK. The 338 Allen Xpress in the 2950 fps on average with same bullet and then jumping up to the 338 AM at 3250 fps, all in 30" barrels. There is still a big jump from the Allen Xpress to the Allen Magnum but there are options between the two. Kirby Allen(50) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
anything between the 338 Edge and the 338 AM?
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