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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm SAUM Wildcat!
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<blockquote data-quote="calinb" data-source="post: 634482" data-attributes="member: 31242"><p>Yeah--maybe straighten out the GT case a bit more. The taper is currently .0085" / inch but the 7 WSM is even less at .0058" / inch! Using the straighter WSM taper would bump the case capacity up to about 65 grains.</p><p></p><p>When you measure the cases, could be please give me the weight of the brass too, Travis?</p><p></p><p>Thanks,</p><p></p><p>-Cal</p><p></p><p>Edit: The increase in GT case capacity realized with the straighter .0058 taper only provides about a 10 fps improvement, at max velocity (N560) for COAL=2.985. Running at 65,000 PSI yields only about another 5 fps. Straighter walls help out more with COAL=2.840, especially with the bulkier powders like N560 and RL-22, which are limited by the 105% max. fill ratio. (More like 20-30 fps) improvement.</p></blockquote><p></p>
[QUOTE="calinb, post: 634482, member: 31242"] Yeah--maybe straighten out the GT case a bit more. The taper is currently .0085" / inch but the 7 WSM is even less at .0058" / inch! Using the straighter WSM taper would bump the case capacity up to about 65 grains. When you measure the cases, could be please give me the weight of the brass too, Travis? Thanks, -Cal Edit: The increase in GT case capacity realized with the straighter .0058 taper only provides about a 10 fps improvement, at max velocity (N560) for COAL=2.985. Running at 65,000 PSI yields only about another 5 fps. Straighter walls help out more with COAL=2.840, especially with the bulkier powders like N560 and RL-22, which are limited by the 105% max. fill ratio. (More like 20-30 fps) improvement. [/QUOTE]
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7mm SAUM Wildcat!
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