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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5 WSM testing results
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<blockquote data-quote="4mesh063" data-source="post: 26156" data-attributes="member: 941"><p>Brent wrote</p><p></p><p>"The 7mm case is longer than the 270 or the 300wsm, which are the same length,"</p><p></p><p>Brent, I keep hearing this from people and I don't see the difference. My brother built a 7wsm and uses 30wsm brass. I have the prints for chamber dimensions and it sure looks to me as if a 7mm round would go into a 30wsm. </p><p></p><p>The dimensions I will quote are going to be 7mm first then 30 Cal.</p><p></p><p>Bolt face to shoulder, 1.6585, 1.6588</p><p>Angle, both 35deg.</p><p>Body-Shoulder radius .050</p><p>Shoulder to neck Radius .120</p><p>Base to Neck beginning 1.8131, 1.7970 **</p><p>Overall Chamber Length, Both 2.1100</p><p></p><p>The face to shoulder is only .0003 and that's certainly not enough to keep a case out. </p><p></p><p>** The base to neck change is only a continuation of the 35Deg shoulder down to 7mm at .3230 as opposed to stopping at the 30 cal diameter of .3460.</p><p></p><p>Want a real laugh, back from the neck .25918 you should have a diameter of .32287 </p><p></p><p>I wonder who's gonna hold 5 decimals! The entire neck and shoulder area is shown to _5_ places. </p><p></p><p>I'd bet if you took a 7mm case it'll go in a 30WSM.</p><p></p><p>These prints also show a freebore of 0.0000</p><p></p><p>Why such a slow powder, just for testing??</p><p></p><p>It won't take long before the Berger is flatter I would presume. The velocity's are proportional to the weights and the 140's gonna keep right on truckin.</p></blockquote><p></p>
[QUOTE="4mesh063, post: 26156, member: 941"] Brent wrote "The 7mm case is longer than the 270 or the 300wsm, which are the same length," Brent, I keep hearing this from people and I don't see the difference. My brother built a 7wsm and uses 30wsm brass. I have the prints for chamber dimensions and it sure looks to me as if a 7mm round would go into a 30wsm. The dimensions I will quote are going to be 7mm first then 30 Cal. Bolt face to shoulder, 1.6585, 1.6588 Angle, both 35deg. Body-Shoulder radius .050 Shoulder to neck Radius .120 Base to Neck beginning 1.8131, 1.7970 ** Overall Chamber Length, Both 2.1100 The face to shoulder is only .0003 and that's certainly not enough to keep a case out. ** The base to neck change is only a continuation of the 35Deg shoulder down to 7mm at .3230 as opposed to stopping at the 30 cal diameter of .3460. Want a real laugh, back from the neck .25918 you should have a diameter of .32287 I wonder who's gonna hold 5 decimals! The entire neck and shoulder area is shown to _5_ places. I'd bet if you took a 7mm case it'll go in a 30WSM. These prints also show a freebore of 0.0000 Why such a slow powder, just for testing?? It won't take long before the Berger is flatter I would presume. The velocity's are proportional to the weights and the 140's gonna keep right on truckin. [/QUOTE]
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6.5 WSM testing results
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