Load Specifications
Bullet:.308 | 154gr | Hammer HHT
Bullet Manufacturer:Hammer
Bullet Weight:154 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 Win. Mag. load data
Case Length (l3):2.62"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:90.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:11.5
Load data in caliber .300 Win. Mag. with .308 | 154gr | Hammer HHT bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Reloder-16.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 55,550 psi | 89% | 2920 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,433 psi | 87% | 2943 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,275 psi | 90% | 3015 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,548 psi | 86% | 2949 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,803 psi | 73% | 2900 fps | 97.3% |
| Accurate 4064 | <<locked>> | 88% | 54,897 psi | 88% | 2999 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,579 psi | 89% | 3097 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 54,839 psi | 88% | 3028 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,231 psi | 90% | 3035 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,650 psi | 86% | 3071 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,809 psi | 86% | 2979 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,955 psi | 88% | 2949 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,201 psi | 89% | 3163 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,391 psi | 90% | 3054 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,388 psi | 86% | 3025 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 52,924 psi | 85% | 3097 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,157 psi | 87% | 3130 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,649 psi | 84% | 3054 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,323 psi | 69% | 2930 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,226 psi | 79% | 3117 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,984 psi | 88% | 3048 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 53,374 psi | 86% | 3015 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,417 psi | 86% | 2989 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,332 psi | 89% | 2959 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,447 psi | 86% | 3005 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,215 psi | 87% | 3028 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 94% | 54,563 psi | 87% | 3091 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 92% | 54,911 psi | 88% | 3051 fps | 97% |
| Hodgdon H4895 | <<locked>> | 84% | 55,434 psi | 89% | 3041 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,026 psi | 85% | 3022 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,550 psi | 89% | 3077 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,216 psi | 89% | 3130 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,665 psi | 57% | 1886 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,185 psi | 85% | 2989 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,883 psi | 90% | 3025 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,651 psi | 89% | 3018 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,201 psi | 89% | 2995 fps | 98.1% |
| IMR 4350 | <<locked>> | 96% | 54,215 psi | 87% | 3022 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,521 psi | 89% | 3028 fps | 98.1% |
| IMR 4831 | <<locked>> | 98% | 56,130 psi | 90% | 3087 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 54,737 psi | 88% | 3058 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 53,809 psi | 86% | 2979 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,897 psi | 88% | 3002 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,259 psi | 87% | 2956 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,434 psi | 89% | 3012 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,824 psi | 88% | 3015 fps | 99.1% |
| Lovex S070 | <<locked>> | 96% | 56,028 psi | 90% | 3054 fps | 98.5% |
| Norma 201 | <<locked>> | 84% | 53,490 psi | 86% | 2972 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,143 psi | 87% | 2972 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,985 psi | 90% | 3064 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,752 psi | 88% | 3071 fps | 96.4% |
| Norma MRPᴾ | <<locked>> | 100% | 48,675 psi | 78% | 3068 fps | 97% |
| Norma URP | <<locked>> | 96% | 54,418 psi | 87% | 3081 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 53,330 psi | 86% | 3035 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 53,229 psi | 85% | 3071 fps | 98.6% |
| Ramshot TAC | <<locked>> | 82% | 54,085 psi | 87% | 2999 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,896 psi | 86% | 3015 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,216 psi | 58% | 1932 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,462 psi | 87% | 3012 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 53,925 psi | 86% | 3091 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,853 psi | 86% | 3130 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,405 psi | 89% | 3117 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,505 psi | 87% | 3146 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 54,215 psi | 87% | 2953 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,983 psi | 87% | 2972 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,461 psi | 86% | 3009 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,372 psi | 82% | 3035 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 92% | 53,417 psi | 86% | 2989 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,824 psi | 88% | 3015 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,897 psi | 88% | 3002 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,434 psi | 89% | 3012 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,028 psi | 90% | 3054 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,303 psi | 89% | 3074 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,304 psi | 90% | 3035 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,374 psi | 86% | 2999 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,795 psi | 88% | 2910 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,405 psi | 89% | 2907 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,085 psi | 88% | 2969 fps | 98.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,879 psi | 82% | 3028 fps | 96% |
| Somchem S335 | <<locked>> | 84% | 54,302 psi | 87% | 2907 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,014 psi | 90% | 3025 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 53,737 psi | 86% | 3009 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 52,881 psi | 85% | 3081 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,257 psi | 84% | 3015 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 84% | 55,259 psi | 89% | 2894 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,186 psi | 87% | 2936 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,824 psi | 88% | 2953 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,158 psi | 88% | 2986 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,229 psi | 85% | 3022 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 54,128 psi | 87% | 2976 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,156 psi | 85% | 2946 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,941 psi | 90% | 3081 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,298 psi | 77% | 3015 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,229 psi | 85% | 2995 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,636 psi | 88% | 3028 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,810 psi | 88% | 3094 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,914 psi | 62% | 2953 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,490 psi | 86% | 3009 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 52,098 psi | 84% | 2871 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,643 psi | 72% | 2792 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,576 psi | 84% | 2963 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,891 psi | 75% | 2831 fps | 95.6% |
| Accurate 3100 | <<locked>> | 96% | 39,726 psi | 64% | 2779 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 42,293 psi | 68% | 2789 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 33,707 psi | 54% | 2657 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 48,225 psi | 77% | 2917 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 40,973 psi | 66% | 2756 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 98% | 50,096 psi | 80% | 3005 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,386 psi | 81% | 2923 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,416 psi | 82% | 2900 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,454 psi | 71% | 2959 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,930 psi | 66% | 2782 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,801 psi | 70% | 2848 fps | 98.8% |
| Alliant Reloder-16 | 58.1 gr | 82% | 33,721 psi | 54% | 2674 fps | 95.5% |
| Alliant Reloder-17 | 61.1 gr | 80% | 35,520 psi | 57% | 2749 fps | 97.9% |
| Alliant Reloder-19 | <<locked>> | 98% | 49,182 psi | 79% | 2992 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,399 psi | 47% | 2572 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 92% | 36,666 psi | 59% | 2835 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,008 psi | 77% | 2927 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 40,741 psi | 65% | 2785 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 44,063 psi | 71% | 2812 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,837 psi | 83% | 2907 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,719 psi | 80% | 2946 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,408 psi | 66% | 2789 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 86% | 41,495 psi | 67% | 2841 fps | 95% |
| Hodgdon H4350 | <<locked>> | 88% | 48,051 psi | 77% | 2930 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 48,718 psi | 78% | 2927 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,950 psi | 46% | 2507 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,078 psi | 72% | 2900 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 44,106 psi | 71% | 2920 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,513 psi | 43% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,731 psi | 75% | 2874 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 48,979 psi | 79% | 2920 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,018 psi | 69% | 2792 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,542 psi | 73% | 2818 fps | 96.1% |
| IMR 4350 | <<locked>> | 90% | 44,628 psi | 72% | 2844 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,120 psi | 69% | 2795 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 32,677 psi | 52% | 2615 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 44,904 psi | 72% | 2881 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 50,386 psi | 81% | 2923 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,863 psi | 77% | 2890 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,819 psi | 77% | 2848 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 42,902 psi | 69% | 2792 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 37,608 psi | 60% | 2677 fps | 95.2% |
| Lovex S070 | <<locked>> | 86% | 40,640 psi | 65% | 2762 fps | 95% |
| Norma 201 | <<locked>> | 80% | 47,166 psi | 76% | 2864 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,732 psi | 77% | 2867 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,163 psi | 69% | 2835 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 51,097 psi | 82% | 3005 fps | 95.6% |
| Norma MRP | <<locked>> | 96% | 42,351 psi | 68% | 2930 fps | 95% |
| Norma URP | <<locked>> | 82% | 33,953 psi | 54% | 2661 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 43,149 psi | 69% | 2854 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 40,538 psi | 65% | 2828 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 50,502 psi | 81% | 2936 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,227 psi | 81% | 2956 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,919 psi | 43% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,800 psi | 67% | 2772 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,833 psi | 75% | 2966 fps | 99.2% |
| ReloadSwiss RS 60 | 61.1 gr | 80% | 37,869 psi | 61% | 2822 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 36,114 psi | 58% | 2740 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 38,406 psi | 62% | 2815 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 50,952 psi | 82% | 2900 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,701 psi | 72% | 2812 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 38,203 psi | 61% | 2723 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 98% | 48,095 psi | 77% | 2976 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 86% | 44,063 psi | 71% | 2812 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,608 psi | 60% | 2677 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,863 psi | 77% | 2890 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,902 psi | 69% | 2792 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 40,640 psi | 65% | 2762 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,407 psi | 63% | 2779 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,950 psi | 78% | 2910 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,789 psi | 75% | 2884 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,428 psi | 78% | 2812 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,524 psi | 65% | 2667 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,134 psi | 68% | 2733 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,630 psi | 76% | 2969 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 48,037 psi | 77% | 2808 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,820 psi | 78% | 2907 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 38,957 psi | 62% | 2730 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 28,326 psi | 45% | 2546 fps | 96.6% |
| Somchem S385 | <<locked>> | 96% | 45,498 psi | 73% | 2894 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 48,921 psi | 78% | 2802 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,744 psi | 72% | 2789 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,223 psi | 73% | 2799 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,115 psi | 60% | 2661 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 35,520 psi | 57% | 2667 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 50,778 psi | 81% | 2923 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,598 psi | 70% | 2785 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 34,998 psi | 56% | 2667 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 31,937 psi | 51% | 2651 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,851 psi | 53% | 2585 fps | 97.3% |
| Winchester 748 | <<locked>> | 80% | 50,807 psi | 81% | 2969 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,698 psi | 67% | 2841 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 92% | 29,515 psi | 47% | 2657 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,572 psi | 75% | 2890 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 98 powders for .300 Win. Mag. loaded with the .308 | 154gr | Hammer HHT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,163 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,163 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 154.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Reloder-16 rank at the top here: for .300 Win. Mag. with the .308 | 154gr | Hammer HHT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.