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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