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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Rebarrel a Model 7 300 SUAM to 270 WSM
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<blockquote data-quote="freddiej" data-source="post: 1881111" data-attributes="member: 26227"><p>N2Trkys, you can slow the speed down approximately 35 to 50 FPS per inch from 26 inches.</p><p>With 67.5 grains of H-1000, at 24" barrel 3,000 FPS: 22" 2900, 20" 2800 FPS</p><p>With 71.0 grains of IMR 7977 at 24" 3050 FPS, at 22" 2950 FPS, at 20" 2850 FPS</p><p>with 60.0 grains of H-4831 at 24" 2960 FPS, 22" 2860 FPS, 20" 2760 FPS </p><p>With 57.0 grains of H-414/W760 at 24" 2990FPS, 22" 2890 FPS, 20" 2790 FPS</p><p>this is based on an average SAAMI chamber, Winchester cases, Win LRM Primers, and my interior balistics program and the Hodgdon's manual. Qick load and Hodgdon's are within 10 FPS of each other like clockwork.</p></blockquote><p></p>
[QUOTE="freddiej, post: 1881111, member: 26227"] N2Trkys, you can slow the speed down approximately 35 to 50 FPS per inch from 26 inches. With 67.5 grains of H-1000, at 24" barrel 3,000 FPS: 22" 2900, 20" 2800 FPS With 71.0 grains of IMR 7977 at 24" 3050 FPS, at 22" 2950 FPS, at 20" 2850 FPS with 60.0 grains of H-4831 at 24" 2960 FPS, 22" 2860 FPS, 20" 2760 FPS With 57.0 grains of H-414/W760 at 24" 2990FPS, 22" 2890 FPS, 20" 2790 FPS this is based on an average SAAMI chamber, Winchester cases, Win LRM Primers, and my interior balistics program and the Hodgdon's manual. Qick load and Hodgdon's are within 10 FPS of each other like clockwork. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Rebarrel a Model 7 300 SUAM to 270 WSM
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