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New Barrel Specs:

 
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Old 10-03-2004, 08:44 AM
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Join Date: Jan 2003
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Re: New Barrel Specs:

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
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