Load Specifications
Load data in caliber .300 H&H Mag. with .311 | 180gr | Sellier & Bellot FMJ bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Alliant Reloder-26.
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 2495 | <<locked>> | 82% | 53,592 psi | 86% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,679 psi | 88% | 2743 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,880 psi | 83% | 2779 fps | 99.3% |
| Accurate 4064 | <<locked>> | 84% | 53,824 psi | 86% | 2733 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,404 psi | 87% | 2835 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 52,968 psi | 85% | 2917 fps | 96.8% |
| ADI AR 2206H | <<locked>> | 82% | 56,318 psi | 90% | 2808 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,998 psi | 87% | 2762 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,419 psi | 89% | 2874 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,026 psi | 85% | 2861 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,895 psi | 85% | 2877 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,245 psi | 89% | 2871 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,694 psi | 88% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,984 psi | 88% | 2808 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,158 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,260 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,462 psi | 87% | 2861 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,706 psi | 83% | 2861 fps | 97.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,704 psi | 78% | 2799 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,641 psi | 68% | 2720 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,854 psi | 90% | 2989 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,405 psi | 90% | 2828 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,442 psi | 76% | 2785 fps | 96.5% |
| Bofors RP3 | <<locked>> | 86% | 55,434 psi | 89% | 2802 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,706 psi | 83% | 2861 fps | 97.6% |
| Bofors RP7 | <<locked>> | 90% | 54,955 psi | 88% | 2785 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 86% | 56,028 psi | 90% | 2818 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 52,968 psi | 85% | 2831 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 88% | 52,866 psi | 85% | 2789 fps | 97.8% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,680 psi | 89% | 2851 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,419 psi | 89% | 2815 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,664 psi | 86% | 2802 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 52,895 psi | 85% | 2864 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,260 psi | 58% | 1729 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,418 psi | 87% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,606 psi | 86% | 2746 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,275 psi | 90% | 2782 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 55,811 psi | 89% | 2818 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,461 psi | 86% | 2762 fps | 98.8% |
| IMR 4831 | <<locked>> | 94% | 54,665 psi | 88% | 2825 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 52,939 psi | 85% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,969 psi | 88% | 2805 fps | 96.2% |
| Lovex S060 | <<locked>> | 82% | 55,274 psi | 89% | 2736 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,708 psi | 86% | 2740 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,287 psi | 85% | 2756 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 54,563 psi | 87% | 2799 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,062 psi | 69% | 2631 fps | 97.9% |
| Norma 201 | <<locked>> | 82% | 55,129 psi | 88% | 2753 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,811 psi | 89% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,273 psi | 87% | 2792 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,055 psi | 85% | 2815 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 54,969 psi | 88% | 2946 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 53,156 psi | 85% | 2822 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,926 psi | 88% | 2818 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,430 psi | 81% | 2844 fps | 96% |
| Ramshot Hunter | <<locked>> | 94% | 55,419 psi | 89% | 2874 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,078 psi | 72% | 2723 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,999 psi | 59% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,941 psi | 90% | 2802 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,028 psi | 90% | 2874 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,956 psi | 90% | 2907 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,027 psi | 87% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,434 psi | 90% | 2940 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,408 psi | 66% | 2730 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 84% | 55,724 psi | 89% | 2753 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,535 psi | 89% | 2795 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 53,548 psi | 86% | 2789 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 98% | 53,693 psi | 86% | 2848 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 90% | 54,955 psi | 88% | 2785 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,287 psi | 85% | 2756 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 53,708 psi | 86% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,563 psi | 87% | 2799 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,505 psi | 86% | 2805 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,868 psi | 88% | 2782 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,898 psi | 90% | 2684 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,301 psi | 85% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 52,953 psi | 85% | 2710 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,214 psi | 85% | 2841 fps | 97.8% |
| Somchem S335 | <<locked>> | 82% | 55,695 psi | 89% | 2680 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,709 psi | 89% | 2795 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,303 psi | 89% | 2785 fps | 96% |
| Somchem S365 | <<locked>> | 96% | 55,782 psi | 89% | 2874 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,476 psi | 87% | 2825 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 82% | 56,405 psi | 90% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,970 psi | 90% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,420 psi | 90% | 2730 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,374 psi | 86% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,347 psi | 89% | 2815 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,125 psi | 80% | 2743 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 84% | 54,563 psi | 87% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,433 psi | 87% | 2822 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,694 psi | 88% | 2877 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,376 psi | 89% | 2936 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,781 psi | 88% | 2782 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,229 psi | 85% | 2831 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,976 psi | 71% | 2851 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,868 psi | 88% | 2785 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,505 psi | 87% | 2818 fps | 97.8% |
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 2495 | <<locked>> | 80% | 50,125 psi | 80% | 2635 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,993 psi | 77% | 2635 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 34,592 psi | 55% | 2454 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 47,500 psi | 76% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,969 psi | 58% | 2500 fps | 97.6% |
| Accurate High Country | <<locked>> | 94% | 46,035 psi | 74% | 2792 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 52,866 psi | 85% | 2756 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,034 psi | 72% | 2612 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 45,513 psi | 73% | 2703 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 98% | 49,603 psi | 80% | 2802 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,530 psi | 79% | 2822 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 42,801 psi | 69% | 2648 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,353 psi | 73% | 2638 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,428 psi | 78% | 2703 fps | 99.9% |
| Alliant Reloder-16 | 54.2 gr | 80% | 35,360 psi | 57% | 2513 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,726 psi | 64% | 2631 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,107 psi | 72% | 2697 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,424 psi | 68% | 2687 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,528 psi | 44% | 2323 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,083 psi | 53% | 2490 fps | 95.1% |
| Alliant Reloder-26 | 62.8 gr | 84% | 31,444 psi | 50% | 2490 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,779 psi | 85% | 2772 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 44,440 psi | 71% | 2726 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 45,542 psi | 73% | 2648 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,424 psi | 68% | 2687 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 40,292 psi | 65% | 2520 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 45,934 psi | 74% | 2654 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 38,029 psi | 61% | 2546 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 43,671 psi | 70% | 2621 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,083 psi | 84% | 2792 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,808 psi | 53% | 2408 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,096 psi | 80% | 2749 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,639 psi | 64% | 2612 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 43% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,068 psi | 82% | 2713 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,311 psi | 76% | 2644 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,632 psi | 80% | 2674 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 40,872 psi | 66% | 2552 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,756 psi | 67% | 2552 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 34,780 psi | 56% | 2457 fps | 97.3% |
| IMR 4895 | <<locked>> | 80% | 49,676 psi | 80% | 2730 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,605 psi | 83% | 2749 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 51,938 psi | 83% | 2684 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,500 psi | 76% | 2644 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,204 psi | 63% | 2500 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 37,420 psi | 60% | 2480 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 35,592 psi | 57% | 2477 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 51,779 psi | 83% | 2703 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,344 psi | 84% | 2700 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,805 psi | 77% | 2690 fps | 100% |
| Norma 204 | <<locked>> | 88% | 46,282 psi | 74% | 2697 fps | 95.9% |
| Norma MRP | <<locked>> | 90% | 38,885 psi | 62% | 2641 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 35,897 psi | 58% | 2497 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 80% | 48,109 psi | 77% | 2713 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,123 psi | 76% | 2782 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 34,766 psi | 56% | 2477 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 98% | 41,843 psi | 67% | 2657 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,601 psi | 44% | 1585 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,137 psi | 74% | 2641 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,156 psi | 84% | 2818 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,235 psi | 68% | 2687 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,708 psi | 57% | 2516 fps | 97.2% |
| ReloadSwiss RS 70 | 59.3 gr | 80% | 34,925 psi | 56% | 2520 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,609 psi | 62% | 2661 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 49,269 psi | 79% | 2657 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,873 psi | 69% | 2595 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 47,282 psi | 76% | 2684 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 44,106 psi | 71% | 2680 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 40,292 psi | 65% | 2520 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,204 psi | 63% | 2500 fps | 97.2% |
| Shooters World Precision | <<locked>> | 80% | 47,500 psi | 76% | 2644 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,420 psi | 60% | 2480 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,918 psi | 70% | 2644 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,314 psi | 82% | 2726 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,620 psi | 84% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,396 psi | 71% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,305 psi | 61% | 2444 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,700 psi | 70% | 2674 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 52,330 psi | 84% | 2638 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,265 psi | 69% | 2592 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 51,706 psi | 83% | 2726 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 32,343 psi | 52% | 2454 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 39,160 psi | 63% | 2549 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 53,142 psi | 85% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,501 psi | 79% | 2625 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,632 psi | 80% | 2635 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,307 psi | 66% | 2526 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,260 psi | 60% | 2497 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 41,278 psi | 66% | 2582 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 47,921 psi | 77% | 2628 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,709 psi | 59% | 2497 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 28,166 psi | 45% | 2343 fps | 95.2% |
| Vihtavuori N560 | <<locked>> | 98% | 51,634 psi | 83% | 2871 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,593 psi | 59% | 2474 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 38,029 psi | 61% | 2546 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,904 psi | 42% | 2346 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,242 psi | 82% | 2733 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,193 psi | 71% | 2644 fps | 95.4% |
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 H&H Mag. loaded with the .311 | 180gr | Sellier & Bellot FMJ. Alliant Reloder-26 delivers the highest muzzle velocity at 2,989 fps; across all powders the maximum-charge window runs from 1,729 fps to 2,989 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 58–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.311" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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 70, Alliant Reloder-16, Alliant Reloder-26 rank at the top here: for .300 H&H Mag. with the .311 | 180gr | Sellier & Bellot FMJ 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.