Table 1 Heavy 0.308” Match Bullet Twist Rates Bullet


155.5 BT FB


190gn Sierra MK 190gn Berger VLD 200gn Sierra MK


200gn Berger Hybrid


MV (fps) 3,000 2,714 2,714 2,645 2,645


208gn Hornady A-Max 2,594 208gn Hornady HPBT 2,594 210gn Berger VLD 210gn Berger BTLR 210gn Sierra MK


215gn Berger Hybrid 220gn Sierra MK


2,582 2,582 2,582 2,551 2,522


225gn Hornady HPBT 2,494 230gn Berger Hybrid


2,467 Notes


MVs are representative based on all combinations producing 3108 ft/lb ME (benchmark 155.5gn bullet @ 3,000 fps MV)


Lengths from Applied Ballistics for Long Range Shooting 2nd edition by Bryan Litz except for the Hornady 208/225gn HPBT and Berger 215/230gn models where sample bullets were measured by the author.


The twist rate quoted is that which produces an Sg of 1.4 under standard ballistics conditions. 0.5-1.0 slower rates will normally suffice under UK all year round temperature and barometric conditions.


83


THE HANDLOADING BENCH


308 Winchester Rides Again Part 4 By Laurie Holland


Length 1.250” 1.353” 1.386” 1.393” 1.500” 1.532” 1.510” 1.490” 1.467” 1.478” 1.582” 1.489” 1.583” 1.662”


Twist 12.5” 12.1” 11.7” 11.9” 10.6” 10.5”


10.75” 11”


11.25” 11.1” 10.2” 11.2” 10.3” 9.7”


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