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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm Sherman MAX complete
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<blockquote data-quote="elkaholic" data-source="post: 1711471" data-attributes="member: 13833"><p>Yes, the Max. Korhil is correct on the coal. I had previously mentioned 3.090" but that is not what the 195 is. I measured mine at about 1.167" which is likely just bullet length variation. I shot mine again yesterday at 3000' with 69 grs N570 behind the 195. I also tried 565 for the first time. 65 grains made 2902'. I would caution though that your barrel may pressure up faster. These Rock barrels seem to build pressure slower than most Ive shot.</p><p> i. e. you may get the same velocity/pressure with as much as 2 grains less charge?</p></blockquote><p></p>
[QUOTE="elkaholic, post: 1711471, member: 13833"] Yes, the Max. Korhil is correct on the coal. I had previously mentioned 3.090" but that is not what the 195 is. I measured mine at about 1.167" which is likely just bullet length variation. I shot mine again yesterday at 3000' with 69 grs N570 behind the 195. I also tried 565 for the first time. 65 grains made 2902'. I would caution though that your barrel may pressure up faster. These Rock barrels seem to build pressure slower than most Ive shot. i. e. you may get the same velocity/pressure with as much as 2 grains less charge? [/QUOTE]
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7mm Sherman MAX complete
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