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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Sherman Build (This Is My Boomstick!)
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<blockquote data-quote="truck driver" data-source="post: 1371577" data-attributes="member: 49660"><p>I've enjoyed your post and I'm impressed that you are taking a case based off the 280 and getting this much performance out of it with .338 cal 250gr bullets.</p><p>I'm shooting a 338Wm and haven't tried anything heavier than 210gr out of it and that is a 210gr Nosler PT with RE17 and getting 3023fps out of a 24" M77 Hawkeye.</p><p>I have had trouble like you with the 210gr Swift and can't get much over 2900fps with it do to pressure. I think besides the longer bearing surface the brass jacket material also has something to do with it.</p><p>I have torture tested Nosler 35 Whelen seconds brass that I used to form 35W/AI brass pushing a 200gr AB to just under 338Wm velocities along with 225gr PT. I use CFE223 in the 35W/AI with great results. </p><p>Some where in your post I missed what the case dimensions are for the 338 Sherman and was wondering if you would repost them. I have a M70 I might like to try building one on.</p></blockquote><p></p>
[QUOTE="truck driver, post: 1371577, member: 49660"] I've enjoyed your post and I'm impressed that you are taking a case based off the 280 and getting this much performance out of it with .338 cal 250gr bullets. I'm shooting a 338Wm and haven't tried anything heavier than 210gr out of it and that is a 210gr Nosler PT with RE17 and getting 3023fps out of a 24" M77 Hawkeye. I have had trouble like you with the 210gr Swift and can't get much over 2900fps with it do to pressure. I think besides the longer bearing surface the brass jacket material also has something to do with it. I have torture tested Nosler 35 Whelen seconds brass that I used to form 35W/AI brass pushing a 200gr AB to just under 338Wm velocities along with 225gr PT. I use CFE223 in the 35W/AI with great results. Some where in your post I missed what the case dimensions are for the 338 Sherman and was wondering if you would repost them. I have a M70 I might like to try building one on. [/QUOTE]
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338 Sherman Build (This Is My Boomstick!)
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