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THE HANDLOADING BENCH DATA...


6mm NORMA BENCH REST (Part 5)


Table 1 - Rifling Twist Rates for Mid Weight to Heavy Bullets 1 in 8 to 1-9 Rifling Twist Berger 95gn VLD, 100gn BT, 105gn BT, 105gn VLD (1-9 twist marginal with this bullet), 108gn BT Sierra 95gn MK, 107gn MK Hornady 105gn A-Max (9” twist rate marginal with this bullet) Lapua 105gn Scenar (9” twist rate marginal with this bullet) JLK 105gn VLD (9” twist rate marginal with this bullet) 1 in 8 to 1-10 Rifling Twist Berger 87gn VLD, 90gn BT


Nosler 70gn Ballistic Tip (1-12 twist rate marginally suitable); 80gn Ballistic Tip (1-11 twist rate marginally suitable)


Hornady 75gn V-Max (1-11 twist rate marginally suitable); 87gn V-Max; 87gn HPBT Varmint (1-12 twist rate marginally suitable); 100gn BTSP (1-11 twist rate marginally suitable) Lapua 90gn Scenar (1-10 twist rate only marginal with this bullet)


Table 2 - QuickLOAD projections for 95gn and 105gn Berger VLDs in 28” barrel 95gn VLD Allt. Re17 IMR-4895


MV


. . . . . . . . . . . .


1. 2. 3. 4. 5. 6. 7. 8. 9.


10. 11. 12.


H.BLC(2) / W748* H380* (98.7%) IMR-3031 H4895


IMR-4320 W760 / H414*


AA-2520/Lovex DO73.6* H. VarGet Viht N530 Viht N540


3,099 3,067 3,052 3,038 3,036 3,036 3,034


105gn VLD


W760 / H414* Allt. Re17 Viht N550 IMR-4895 Allt. Re15


H.BLC(2) / W748* H380*


3,029 (96.1%) IMR-4320 3,023 3,006 3,005 3,000


H4895 IMR-3031


MV


2,953 (97.9%) 2,952 2,932 2,914 2,902 2,900 2,891 2,884 2,884 2,874


AA-2520/Lovex DO73.6* 2,867 Viht N530


2,853


* = Ball powder. (% figure shown after some MVs is that of the powder burned. All others are 99-100% which is better.)


79


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