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Rifles, Reloading, Optics, Equipment
Reloading
7mm-300WSM wildcat
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<blockquote data-quote="nheninge" data-source="post: 269359" data-attributes="member: 13085"><p>Thats the kind of detail I need!. Thanks guys. I was surprised to think it could be done in one step, but it is so easy to order intermediate bushings. I too want 180 Bergers with a 1:9 barrel twist. At least this is what I think I need after reading Bryan Litz's test data (nice work, and a hell of a reference).</p><p> </p><p>With the norma brass, what was your final bushing size with the norma brass? I am guessing about a 0.309-.310? Here is my quite possibly faulty equation:</p><p>0.284 + 0.028 - 0.002 - 0.001 (bullet diameter/neck thickness X2/neck tension desired/brass springback, respectively).</p><p> </p><p>Have you noticed any springback with the Norma brass? (0.001?)</p><p>What was your final neck thickness after turning (if turned)?</p><p> </p><p>I'll be taking the brass down as soon as I get the bushings!</p><p>I plan on annealing after every firing</p><p> </p><p>I want a long range tack driving SOB that can outshoot my abilities. Hope this is it.</p></blockquote><p></p>
[QUOTE="nheninge, post: 269359, member: 13085"] Thats the kind of detail I need!. Thanks guys. I was surprised to think it could be done in one step, but it is so easy to order intermediate bushings. I too want 180 Bergers with a 1:9 barrel twist. At least this is what I think I need after reading Bryan Litz's test data (nice work, and a hell of a reference). With the norma brass, what was your final bushing size with the norma brass? I am guessing about a 0.309-.310? Here is my quite possibly faulty equation: 0.284 + 0.028 - 0.002 - 0.001 (bullet diameter/neck thickness X2/neck tension desired/brass springback, respectively). Have you noticed any springback with the Norma brass? (0.001?) What was your final neck thickness after turning (if turned)? I'll be taking the brass down as soon as I get the bushings! I plan on annealing after every firing I want a long range tack driving SOB that can outshoot my abilities. Hope this is it. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm-300WSM wildcat
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