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Hunting
Long Range Hunting & Shooting
Fiftydriver Kirby Allen
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<blockquote data-quote="RockyMtnMT" data-source="post: 1481140" data-attributes="member: 7999"><p>The big Cheytac based cases in the 375 are tough on bullets. It is a baring surface issue not getting enough twist on the bullet. Spinning out under the high torque launch. We have Roy's rifle and shot a 414g bullet the other day at 1300y with great success. I think we have a pretty good handle on how much baring surface for the weight of the bullet is needed. Our original 395g has always shot very well. When we started making them sleeker with less baring surface then they would want to switch ends out about 800y.</p><p></p><p>It is an interesting phenomena with the 375's. Same style of bullets in smaller calibers launched at high vel never have any trouble. It is a weight x baring surface x twist x launch speed.</p><p></p><p>Steve</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 1481140, member: 7999"] The big Cheytac based cases in the 375 are tough on bullets. It is a baring surface issue not getting enough twist on the bullet. Spinning out under the high torque launch. We have Roy's rifle and shot a 414g bullet the other day at 1300y with great success. I think we have a pretty good handle on how much baring surface for the weight of the bullet is needed. Our original 395g has always shot very well. When we started making them sleeker with less baring surface then they would want to switch ends out about 800y. It is an interesting phenomena with the 375's. Same style of bullets in smaller calibers launched at high vel never have any trouble. It is a weight x baring surface x twist x launch speed. Steve [/QUOTE]
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Fiftydriver Kirby Allen
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