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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 cal 265grn wildcat bullet test
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<blockquote data-quote="Black Diamond 408" data-source="post: 162278" data-attributes="member: 1563"><p>At 3500fps the bolt lifted easy, primer pockets were ok, and this is with TTI brass, just a bit softer than Jamison. That was with the BMG50 powder. I havent checked the pockets from the US869 loads, they were a bit warmer. But they didnt open any harder than the other loads. All were easy extraction.</p><p></p><p>US869 is noticably faster burning. </p><p></p><p>I do not have any of these issues with the 300MK bullet, any load any powder and it shoots. I suspect there are some twist issues here as well.</p><p>I am stretched to the limit as far as bullet length, the 300mk works very well, the 265wc being a bit longer is causing some finicky problems. The 350WC will not shoot at all, side ways at 100yds. By seeing groups over 1 moa at 100yds and only 4" groups at 700yds is showing a stabilization issue. I would say the 10 twist or faster would be the right choice. The Rock 9.4 should be a real good test.</p><p> </p><p>I plugged .920 BC into exbal to get the drops matched up. 3450fps, 1200' elevation, 90 deg, 61% hum. 3 mph into wind</p><p></p><p>8moa 700yds, the groups were anywhere from several inches high to a min. low, all on the vertical line.</p><p></p><p>It says 13.75 for 1000yds</p><p></p><p>With the limited amount of bullets i had i couldnt do more testing.</p></blockquote><p></p>
[QUOTE="Black Diamond 408, post: 162278, member: 1563"] At 3500fps the bolt lifted easy, primer pockets were ok, and this is with TTI brass, just a bit softer than Jamison. That was with the BMG50 powder. I havent checked the pockets from the US869 loads, they were a bit warmer. But they didnt open any harder than the other loads. All were easy extraction. US869 is noticably faster burning. I do not have any of these issues with the 300MK bullet, any load any powder and it shoots. I suspect there are some twist issues here as well. I am stretched to the limit as far as bullet length, the 300mk works very well, the 265wc being a bit longer is causing some finicky problems. The 350WC will not shoot at all, side ways at 100yds. By seeing groups over 1 moa at 100yds and only 4" groups at 700yds is showing a stabilization issue. I would say the 10 twist or faster would be the right choice. The Rock 9.4 should be a real good test. I plugged .920 BC into exbal to get the drops matched up. 3450fps, 1200' elevation, 90 deg, 61% hum. 3 mph into wind 8moa 700yds, the groups were anywhere from several inches high to a min. low, all on the vertical line. It says 13.75 for 1000yds With the limited amount of bullets i had i couldnt do more testing. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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338 cal 265grn wildcat bullet test
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