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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
The Solid Bullet Debate
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<blockquote data-quote="noel carlson" data-source="post: 291596" data-attributes="member: 16138"><p>jmden,</p><p> </p><p>230 grains is just about where the ZA30/7.0 will fall. This would require a dedicated 5.6" exit-twist, in a gain geometry. Bartlein has no problem manufacturing 416R barrels in a LGT rifling function if you are interested.</p><p> </p><p>If I was looking for a quantum leap in 30 caliber performance, this is the projectile which I would focus on. Everything else is unnecessary compromise, including the 6.0... but we are talking about a ground-up, custom-build proposition.</p><p> </p><p> </p><p>Edge,</p><p> </p><p>You have really got my mind working on this terminal ballistics problem. I can make the nose fragment, expand, or any combination thereof at varying velocities. The question really seems to be, what is the most flexible compromise? I believe I have made some progress in understanding the requirements, and you have contributed significantly to that understanding... Thanks.</p><p> </p><p>MR,</p><p> </p><p>You are making an error which is understandable. Do not use manufacturer supplied BC specifications for your estimates. Two of the companies you mentioned are good on this kind of reporting, the other is not... you are relying too heavily on the one that is not.</p><p> </p><p>To all,</p><p> </p><p>I realize that there are not many 50 cal shooters here, but I think some of you might be interested in hearing a piece of range news. My ZA50/6.0-M (930 grains) flew stabily out to 1,000 yards today <em>from a 1: 15" (30 calibers) constant-twist barrel.</em> It appears that the ZA tail design is out-performing my expectations.</p><p> </p><p>There will be more information available on this next week.</p><p> </p><p>Best,</p><p>Noel</p></blockquote><p></p>
[QUOTE="noel carlson, post: 291596, member: 16138"] jmden, 230 grains is just about where the ZA30/7.0 will fall. This would require a dedicated 5.6" exit-twist, in a gain geometry. Bartlein has no problem manufacturing 416R barrels in a LGT rifling function if you are interested. If I was looking for a quantum leap in 30 caliber performance, this is the projectile which I would focus on. Everything else is unnecessary compromise, including the 6.0... but we are talking about a ground-up, custom-build proposition. Edge, You have really got my mind working on this terminal ballistics problem. I can make the nose fragment, expand, or any combination thereof at varying velocities. The question really seems to be, what is the most flexible compromise? I believe I have made some progress in understanding the requirements, and you have contributed significantly to that understanding... Thanks. MR, You are making an error which is understandable. Do not use manufacturer supplied BC specifications for your estimates. Two of the companies you mentioned are good on this kind of reporting, the other is not... you are relying too heavily on the one that is not. To all, I realize that there are not many 50 cal shooters here, but I think some of you might be interested in hearing a piece of range news. My ZA50/6.0-M (930 grains) flew stabily out to 1,000 yards today [I]from a 1: 15" (30 calibers) constant-twist barrel.[/I] It appears that the ZA tail design is out-performing my expectations. There will be more information available on this next week. Best, Noel [/QUOTE]
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