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Ballistic Coefficient Question
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<blockquote data-quote="MontanaRifleman" data-source="post: 900793" data-attributes="member: 11717"><p>All good points Jeff... I'll add that when they stretched the 215 hybrid to the 230, all they did was to lengthen the bearing surface. The nose and tail of the 2 bullets is the same. This might be why the 230 take a hit in velocity in the WM? Another reason might be that the capacity just does not produce enough horsepower to efficeintly push large pills. In the later case I think the same is true of the 7 RM and the 195. That's an awful lot of bullet to be pushed by that cartridge. </p><p></p><p>Last, we all know that 7mm barrels are usually a tighter twist and therefore the caliber lends itself to better (longer) form factors than the typical 308's. The 195 is going to require a good bit more twist than the 230.</p><p></p><p>With the development of new powders like RL33 the heavier bullets will do well in the more moderate cartridge like the WM and RM. </p><p></p><p>Speaking of RL33, I'm doing some temp regression testing as I type, actually between typing <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 900793, member: 11717"] All good points Jeff... I'll add that when they stretched the 215 hybrid to the 230, all they did was to lengthen the bearing surface. The nose and tail of the 2 bullets is the same. This might be why the 230 take a hit in velocity in the WM? Another reason might be that the capacity just does not produce enough horsepower to efficeintly push large pills. In the later case I think the same is true of the 7 RM and the 195. That's an awful lot of bullet to be pushed by that cartridge. Last, we all know that 7mm barrels are usually a tighter twist and therefore the caliber lends itself to better (longer) form factors than the typical 308's. The 195 is going to require a good bit more twist than the 230. With the development of new powders like RL33 the heavier bullets will do well in the more moderate cartridge like the WM and RM. Speaking of RL33, I'm doing some temp regression testing as I type, actually between typing :) [/QUOTE]
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