Load Specifications
Bullet Manufacturer:MRR
Bullet Weight:167 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 H&H Mag. load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:85.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:12.5
Load data in caliber .300 H&H Mag. with .308 | 167gr | MRR Green Hunting bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-16 and ReloadSwiss RS 70.
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% | 55,912 psi | 90% | 2785 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,882 psi | 88% | 2808 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,940 psi | 86% | 2822 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,195 psi | 74% | 2782 fps | 97.8% |
| Accurate 4064 | <<locked>> | 88% | 55,317 psi | 89% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,869 psi | 90% | 2963 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 55,245 psi | 89% | 2894 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,127 psi | 85% | 2848 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2940 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,273 psi | 87% | 2844 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,492 psi | 89% | 2815 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,608 psi | 89% | 3025 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,795 psi | 86% | 2936 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,345 psi | 86% | 2871 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,708 psi | 86% | 2890 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,505 psi | 86% | 2966 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,491 psi | 87% | 2995 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,982 psi | 85% | 2930 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,729 psi | 70% | 2808 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,261 psi | 61% | 2703 fps | 96.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,530 psi | 79% | 2989 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,230 psi | 89% | 2913 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 54,027 psi | 87% | 2884 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,882 psi | 86% | 2861 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,622 psi | 89% | 2825 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,621 psi | 86% | 2867 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,650 psi | 88% | 2897 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 54,882 psi | 88% | 2959 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 92% | 55,143 psi | 88% | 2920 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 84% | 55,825 psi | 90% | 2904 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,490 psi | 86% | 2890 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,057 psi | 90% | 2943 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,492 psi | 89% | 2999 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 57% | 1785 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,766 psi | 86% | 2858 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,376 psi | 90% | 2884 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,912 psi | 90% | 2881 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,593 psi | 89% | 2864 fps | 98.5% |
| IMR 4350 | <<locked>> | 96% | 54,404 psi | 87% | 2887 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,767 psi | 89% | 2894 fps | 98.5% |
| IMR 4831 | <<locked>> | 98% | 56,304 psi | 90% | 2949 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 55,114 psi | 88% | 2920 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,273 psi | 87% | 2844 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,303 psi | 89% | 2867 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,650 psi | 88% | 2822 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,724 psi | 89% | 2874 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,201 psi | 89% | 2884 fps | 99.3% |
| Lovex S070 | <<locked>> | 96% | 56,405 psi | 90% | 2923 fps | 98.8% |
| Norma 201 | <<locked>> | 84% | 53,911 psi | 86% | 2838 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,650 psi | 88% | 2838 fps | 100% |
| Norma 203B | <<locked>> | 86% | 52,939 psi | 85% | 2874 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,361 psi | 89% | 2943 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 49,197 psi | 79% | 2943 fps | 97.5% |
| Norma URP | <<locked>> | 96% | 54,882 psi | 88% | 2946 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 53,708 psi | 86% | 2904 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 53,780 psi | 86% | 2946 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 54,346 psi | 87% | 2864 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,128 psi | 87% | 2881 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,405 psi | 58% | 1831 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,810 psi | 88% | 2881 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,404 psi | 87% | 2956 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,259 psi | 87% | 2992 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,883 psi | 90% | 2986 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,868 psi | 88% | 3015 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 54,520 psi | 87% | 2815 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,491 psi | 87% | 2838 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,853 psi | 86% | 2877 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,767 psi | 89% | 2917 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,692 psi | 83% | 2907 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 92% | 53,882 psi | 86% | 2861 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,201 psi | 89% | 2884 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,303 psi | 89% | 2867 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,724 psi | 89% | 2874 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,405 psi | 90% | 2923 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,811 psi | 89% | 2943 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,910 psi | 85% | 2844 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,766 psi | 86% | 2864 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,245 psi | 89% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,840 psi | 90% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,448 psi | 89% | 2838 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,213 psi | 82% | 2900 fps | 96.5% |
| Somchem S335 | <<locked>> | 84% | 54,752 psi | 88% | 2772 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,260 psi | 90% | 2887 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,056 psi | 87% | 2874 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 53,316 psi | 85% | 2946 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,460 psi | 84% | 2887 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 84% | 55,680 psi | 89% | 2759 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,621 psi | 88% | 2802 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,347 psi | 89% | 2818 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,695 psi | 89% | 2854 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 53,563 psi | 86% | 2890 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 54,665 psi | 88% | 2844 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 53,432 psi | 86% | 2815 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,159 psi | 90% | 2946 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,559 psi | 78% | 2884 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,722 psi | 86% | 2867 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,955 psi | 88% | 2890 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,158 psi | 88% | 2959 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,088 psi | 63% | 2831 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 53,853 psi | 86% | 2874 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% | 52,533 psi | 84% | 2740 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,005 psi | 72% | 2664 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,164 psi | 71% | 2651 fps | 95.3% |
| Accurate 3100 | <<locked>> | 94% | 37,246 psi | 60% | 2602 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 42,641 psi | 68% | 2664 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,705 psi | 51% | 2487 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 48,718 psi | 78% | 2789 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,394 psi | 66% | 2635 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 96% | 47,152 psi | 76% | 2822 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,850 psi | 82% | 2792 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,967 psi | 83% | 2769 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,933 psi | 72% | 2835 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 47,065 psi | 75% | 2818 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,278 psi | 66% | 2657 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,251 psi | 71% | 2723 fps | 99.2% |
| Alliant Reloder-16 | 53.6 gr | 80% | 31,850 psi | 51% | 2503 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,824 psi | 57% | 2635 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,427 psi | 74% | 2812 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,631 psi | 48% | 2467 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,853 psi | 57% | 2641 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,272 psi | 55% | 2651 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,341 psi | 78% | 2799 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 41,046 psi | 66% | 2661 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 44,425 psi | 71% | 2690 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,199 psi | 84% | 2772 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,227 psi | 81% | 2815 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,800 psi | 67% | 2671 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 41,974 psi | 67% | 2723 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 45,556 psi | 73% | 2749 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 49,211 psi | 79% | 2799 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,327 psi | 47% | 2405 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,469 psi | 73% | 2772 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 44,483 psi | 71% | 2799 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,701 psi | 43% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,137 psi | 76% | 2746 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 49,298 psi | 79% | 2782 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,497 psi | 70% | 2671 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,818 psi | 73% | 2694 fps | 96.7% |
| IMR 4350 | <<locked>> | 88% | 42,308 psi | 68% | 2671 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,785 psi | 65% | 2618 fps | 95.1% |
| IMR 4831 | <<locked>> | 82% | 33,011 psi | 53% | 2503 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 45,382 psi | 73% | 2756 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 50,850 psi | 82% | 2792 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,341 psi | 78% | 2766 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,254 psi | 77% | 2720 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,395 psi | 70% | 2671 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,607 psi | 57% | 2510 fps | 95% |
| Lovex S070 | <<locked>> | 86% | 41,031 psi | 66% | 2648 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 47,485 psi | 76% | 2733 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,095 psi | 77% | 2740 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,627 psi | 70% | 2713 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 48,080 psi | 77% | 2818 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 42,699 psi | 68% | 2815 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 32,068 psi | 51% | 2493 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 43,598 psi | 70% | 2730 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 38,189 psi | 61% | 2648 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 50,807 psi | 81% | 2808 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,749 psi | 81% | 2825 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,963 psi | 43% | 1634 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,076 psi | 67% | 2651 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,355 psi | 76% | 2838 fps | 99.5% |
| ReloadSwiss RS 60 | 57.8 gr | 80% | 38,203 psi | 61% | 2703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,924 psi | 54% | 2566 fps | 95.6% |
| ReloadSwiss RS 70 | 61.6 gr | 84% | 36,027 psi | 58% | 2631 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 51,300 psi | 82% | 2766 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,107 psi | 72% | 2684 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,595 psi | 62% | 2605 fps | 99% |
| Rottweil R 904 | <<locked>> | 98% | 52,156 psi | 84% | 2854 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 98% | 48,472 psi | 78% | 2851 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 86% | 44,425 psi | 71% | 2690 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,607 psi | 57% | 2510 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,341 psi | 78% | 2766 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,395 psi | 70% | 2671 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 41,031 psi | 66% | 2648 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,856 psi | 64% | 2661 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,269 psi | 79% | 2782 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,253 psi | 76% | 2756 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,747 psi | 78% | 2680 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,814 psi | 65% | 2546 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,827 psi | 64% | 2562 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 48,008 psi | 77% | 2844 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 48,370 psi | 78% | 2680 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,182 psi | 79% | 2776 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 39,291 psi | 63% | 2608 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 28,689 psi | 46% | 2441 fps | 97.3% |
| Somchem S385 | <<locked>> | 94% | 42,830 psi | 69% | 2713 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 49,255 psi | 79% | 2667 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,107 psi | 72% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,614 psi | 73% | 2674 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,434 psi | 60% | 2543 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 33,489 psi | 54% | 2497 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 51,097 psi | 82% | 2789 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,932 psi | 70% | 2661 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,953 psi | 53% | 2497 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 86% | 30,197 psi | 48% | 2487 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,098 psi | 53% | 2474 fps | 97.8% |
| Winchester 748 | <<locked>> | 80% | 51,416 psi | 82% | 2838 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,974 psi | 67% | 2723 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,891 psi | 45% | 2490 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,978 psi | 75% | 2762 fps | 99.9% |
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 100 powders for .300 H&H Mag. loaded with the .308 | 167gr | MRR Green Hunting. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,025 fps; across all powders the maximum-charge window runs from 1,785 fps to 3,025 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 167.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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. ReloadSwiss RS 60, Alliant Reloder-16, ReloadSwiss RS 70 rank at the top here: for .300 H&H Mag. with the .308 | 167gr | MRR Green Hunting 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.