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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Barrel Specs:
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<blockquote data-quote="sniper2" data-source="post: 36017" data-attributes="member: 1018"><p>Minimum Barrel Twist Necessary To Stabilize </p><p></p><p> Bullet ___________________________________________________Bullet Weight (gr)_______________________________________________________</p><p> Diam. 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500</p><p> .224" .. 33.0 16.5 11.0 8.3 6.6 5.5</p><p> .243" ....... 22.9 15.2 11.4 9.1 7.6 6.5 5.7 5.1</p><p> .257 ....... 28.7 19.4 14.3 11.5 9.6 8.2 7.2 6.4 5.7 5.2</p><p> .264" ....... 31.9 21.2 15.9 12.7 10.6 9.1 8.0 7.1 6.4 5.8 5.3</p><p> .277 ............ 25.9 19.4 15.5 12.9 11.1 9.7 8.6 7.7 7.0 6.5 6.0 5.5 5.2</p><p> .284" ............ 28.4 21.3 17.1 14.2 12.2 10.7 9.5 8.5 7.8 7.1 6.6 6.1 5.7 5.3 5.0</p><p> .308" ............ 39.3 29.5 23.6 19.7 16.9 14.8 13.1 11.8 10.7 9.8 9.1 8.4 7.9 7.4 6.9 6.6 6.2 5.9 5.6 5.4 5.1</p><p> .311 ................. 30.8 24.6 20.5 17.6 15.4 13.7 12.3 11.2 10.3 9.5 8.8 8.2 7.7 7.2 6.8 6.5 6.2 5.9 5.6 5.3</p><p> .323 ................. 35.8 28.7 23.9 20.5 17.9 15.9 14.3 13.0 11.9 11.0 10.2 9.5 9.0 8.4 8.0 7.5 7.2 6.8 6.5 6.2 6.0</p><p> .338" ...................... 34.2 28.5 24.5 21.4 19.0 17.1 15.6 14.3 13.2 12.2 11.4 10.7 10.1 9.5 9.0 8.6 8.2 7.8 7.4 7.1 6.8</p><p> .358" ........................... 35.9 30.8 26.9 23.9 21.5 19.6 18.0 16.6 15.4 14.4 13.5 12.7 12.0 11.3 10.8 10.3 9.8 9.4 9.0 8.6</p><p> .375" ................................ 37.1 32.4 28.8 25.9 23.6 21.6 20.0 18.5 17.3 16.2 15.3 14.4 13.7 13.0 12.4 11.8 11.3 10.8 10.4</p><p> .400" .......................................... 37.4 33.7 30.6 28.1 25.9 24.1 22.5 21.1 19.8 18.7 17.7 16.8 16.1 15.3 14.6 14.0 13.4</p><p> .416" .......................................... 43.8 39.4 35.8 32.9 30.3 28.2 26.3 24.6 23.2 21.9 20.8 19.7 18.8 17.9 17.1 16.4 15.8</p><p> .430" .......................................... 49.6 44.6 40.5 37.1 34.3 31.8 29.7 27.9 26.2 24.8 23.5 22.3 21.3 20.3 19.4 18.6 17.8</p><p> .458" ........................................................................ 38.5 36.1 34.0 32.0 30.4 28.9 27.5 26.2 25.1 24.0 23.1</p></blockquote><p></p>
[QUOTE="sniper2, post: 36017, member: 1018"] Minimum Barrel Twist Necessary To Stabilize Bullet ___________________________________________________Bullet Weight (gr)_______________________________________________________ Diam. 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 .224" .. 33.0 16.5 11.0 8.3 6.6 5.5 .243" ....... 22.9 15.2 11.4 9.1 7.6 6.5 5.7 5.1 .257 ....... 28.7 19.4 14.3 11.5 9.6 8.2 7.2 6.4 5.7 5.2 .264" ....... 31.9 21.2 15.9 12.7 10.6 9.1 8.0 7.1 6.4 5.8 5.3 .277 ............ 25.9 19.4 15.5 12.9 11.1 9.7 8.6 7.7 7.0 6.5 6.0 5.5 5.2 .284" ............ 28.4 21.3 17.1 14.2 12.2 10.7 9.5 8.5 7.8 7.1 6.6 6.1 5.7 5.3 5.0 .308" ............ 39.3 29.5 23.6 19.7 16.9 14.8 13.1 11.8 10.7 9.8 9.1 8.4 7.9 7.4 6.9 6.6 6.2 5.9 5.6 5.4 5.1 .311 ................. 30.8 24.6 20.5 17.6 15.4 13.7 12.3 11.2 10.3 9.5 8.8 8.2 7.7 7.2 6.8 6.5 6.2 5.9 5.6 5.3 .323 ................. 35.8 28.7 23.9 20.5 17.9 15.9 14.3 13.0 11.9 11.0 10.2 9.5 9.0 8.4 8.0 7.5 7.2 6.8 6.5 6.2 6.0 .338" ...................... 34.2 28.5 24.5 21.4 19.0 17.1 15.6 14.3 13.2 12.2 11.4 10.7 10.1 9.5 9.0 8.6 8.2 7.8 7.4 7.1 6.8 .358" ........................... 35.9 30.8 26.9 23.9 21.5 19.6 18.0 16.6 15.4 14.4 13.5 12.7 12.0 11.3 10.8 10.3 9.8 9.4 9.0 8.6 .375" ................................ 37.1 32.4 28.8 25.9 23.6 21.6 20.0 18.5 17.3 16.2 15.3 14.4 13.7 13.0 12.4 11.8 11.3 10.8 10.4 .400" .......................................... 37.4 33.7 30.6 28.1 25.9 24.1 22.5 21.1 19.8 18.7 17.7 16.8 16.1 15.3 14.6 14.0 13.4 .416" .......................................... 43.8 39.4 35.8 32.9 30.3 28.2 26.3 24.6 23.2 21.9 20.8 19.7 18.8 17.9 17.1 16.4 15.8 .430" .......................................... 49.6 44.6 40.5 37.1 34.3 31.8 29.7 27.9 26.2 24.8 23.5 22.3 21.3 20.3 19.4 18.6 17.8 .458" ........................................................................ 38.5 36.1 34.0 32.0 30.4 28.9 27.5 26.2 25.1 24.0 23.1 [/QUOTE]
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