Load Specifications
Load data in caliber .300 H&H Mag. with .311 | 180gr | Sellier & Bellot SPRN bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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% | 55,738 psi | 89% | 2720 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 53,301 psi | 85% | 2736 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,694 psi | 88% | 2831 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,072 psi | 90% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,301 psi | 85% | 2828 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 56,057 psi | 90% | 2976 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 86% | 56,130 psi | 90% | 2805 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,056 psi | 87% | 2867 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,376 psi | 89% | 2917 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,521 psi | 89% | 2927 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,215 psi | 87% | 2864 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,374 psi | 86% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,650 psi | 86% | 2799 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,027 psi | 87% | 2884 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,071 psi | 88% | 2904 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,476 psi | 86% | 2858 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,331 psi | 87% | 2913 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,285 psi | 82% | 2848 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,614 psi | 72% | 2772 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,187 psi | 88% | 2989 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,719 psi | 80% | 2835 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 54,215 psi | 87% | 2792 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,331 psi | 87% | 2913 fps | 98.3% |
| Bofors RP7 | <<locked>> | 88% | 53,766 psi | 86% | 2779 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 54,679 psi | 88% | 2812 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,390 psi | 89% | 2877 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 55,071 psi | 88% | 2838 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 55,550 psi | 89% | 2861 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,317 psi | 87% | 2844 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,404 psi | 87% | 2812 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,724 psi | 89% | 2844 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,714 psi | 70% | 2802 fps | 96.4% |
| Hodgdon Superformance | <<locked>> | 90% | 55,666 psi | 89% | 2917 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,463 psi | 58% | 1749 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,390 psi | 89% | 2785 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,650 psi | 88% | 2769 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 54,694 psi | 88% | 2812 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,332 psi | 89% | 2805 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 53,722 psi | 86% | 2822 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,085 psi | 88% | 2825 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,548 psi | 86% | 2795 fps | 96.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,736 psi | 85% | 2887 fps | 96.6% |
| Lovex S062 | <<locked>> | 84% | 55,811 psi | 89% | 2782 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,463 psi | 89% | 2802 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 53,359 psi | 86% | 2792 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,527 psi | 73% | 2684 fps | 98.6% |
| Norma 203B | <<locked>> | 84% | 56,347 psi | 90% | 2835 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,332 psi | 89% | 2864 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 54,056 psi | 87% | 2940 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 55,506 psi | 89% | 2864 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,679 psi | 86% | 2812 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,084 psi | 85% | 2904 fps | 97% |
| Ramshot Hunter | <<locked>> | 92% | 54,273 psi | 87% | 2864 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,398 psi | 76% | 2779 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,217 psi | 60% | 1791 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,534 psi | 87% | 2795 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,621 psi | 88% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,069 psi | 85% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,259 psi | 89% | 2933 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,598 psi | 70% | 2795 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 82% | 54,418 psi | 87% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,375 psi | 87% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,753 psi | 89% | 2838 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 98% | 56,275 psi | 90% | 2900 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 53,766 psi | 86% | 2779 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,463 psi | 89% | 2802 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,811 psi | 89% | 2782 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,359 psi | 86% | 2792 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,811 psi | 89% | 2848 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,274 psi | 89% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,984 psi | 88% | 2756 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,782 psi | 89% | 2894 fps | 98.4% |
| Somchem S355 | <<locked>> | 86% | 54,230 psi | 87% | 2785 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 53,954 psi | 87% | 2776 fps | 96% |
| Somchem S365 | <<locked>> | 94% | 54,868 psi | 88% | 2867 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,461 psi | 86% | 2822 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 54,781 psi | 88% | 2703 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,737 psi | 88% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,477 psi | 89% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,114 psi | 87% | 2808 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2795 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 82% | 53,113 psi | 85% | 2717 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,200 psi | 85% | 2812 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 53,940 psi | 86% | 2874 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,389 psi | 87% | 2930 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,461 psi | 86% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,390 psi | 89% | 2877 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,514 psi | 75% | 2910 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,432 psi | 86% | 2815 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% | 52,301 psi | 84% | 2674 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,937 psi | 80% | 2680 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 34,055 psi | 55% | 2448 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 49,545 psi | 79% | 2677 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,724 psi | 60% | 2546 fps | 98.3% |
| Accurate High Country | 69.5 gr | 92% | 45,281 psi | 73% | 2785 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 46,528 psi | 75% | 2651 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,483 psi | 71% | 2694 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 48,515 psi | 78% | 2799 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,561 psi | 83% | 2864 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 41,829 psi | 67% | 2638 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,166 psi | 76% | 2677 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,256 psi | 81% | 2743 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,738 psi | 59% | 2556 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,742 psi | 67% | 2680 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,208 psi | 71% | 2687 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,742 psi | 67% | 2684 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,021 psi | 43% | 2313 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,547 psi | 52% | 2484 fps | 95.2% |
| Alliant Reloder-26 | 63.8 gr | 82% | 30,792 psi | 49% | 2477 fps | 95.3% |
| Bofors RP15 | <<locked>> | 96% | 43,859 psi | 70% | 2726 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 47,601 psi | 76% | 2690 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,742 psi | 67% | 2684 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 41,858 psi | 67% | 2566 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 80% | 47,834 psi | 77% | 2700 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,624 psi | 64% | 2592 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 80% | 42,699 psi | 68% | 2615 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 96% | 51,895 psi | 83% | 2805 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,937 psi | 82% | 2785 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,258 psi | 55% | 2451 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,199 psi | 84% | 2792 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,075 psi | 66% | 2740 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 38,566 psi | 62% | 2598 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 44% | 1562 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,936 psi | 78% | 2684 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,242 psi | 82% | 2713 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 39,987 psi | 64% | 2546 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,091 psi | 69% | 2592 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 36,405 psi | 58% | 2503 fps | 98% |
| IMR 4895 | <<locked>> | 80% | 51,561 psi | 83% | 2772 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,430 psi | 81% | 2743 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 49,487 psi | 79% | 2828 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 49,385 psi | 79% | 2684 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,770 psi | 65% | 2543 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 38,957 psi | 62% | 2523 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 35,215 psi | 56% | 2474 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 49,617 psi | 80% | 2730 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,136 psi | 72% | 2687 fps | 95.9% |
| Norma MRP | 66.5 gr | 88% | 38,174 psi | 61% | 2635 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 37,550 psi | 60% | 2539 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 50,024 psi | 80% | 2753 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,035 psi | 74% | 2776 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 36,347 psi | 58% | 2523 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 96% | 41,118 psi | 66% | 2657 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 45% | 1601 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,877 psi | 77% | 2684 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,353 psi | 71% | 2733 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,492 psi | 60% | 2562 fps | 97.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,376 psi | 58% | 2569 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,913 psi | 61% | 2657 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 51,184 psi | 82% | 2697 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,744 psi | 72% | 2635 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,267 psi | 74% | 2677 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 43,294 psi | 69% | 2674 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,858 psi | 67% | 2566 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,770 psi | 65% | 2543 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 49,385 psi | 79% | 2684 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,957 psi | 62% | 2523 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,774 psi | 73% | 2687 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,992 psi | 74% | 2546 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,914 psi | 64% | 2490 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,902 psi | 69% | 2667 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 45,078 psi | 72% | 2635 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,618 psi | 81% | 2723 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 33,997 psi | 55% | 2497 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 38,638 psi | 62% | 2546 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 51,416 psi | 82% | 2657 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,488 psi | 83% | 2671 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,018 psi | 69% | 2566 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,885 psi | 62% | 2539 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 92% | 40,422 psi | 65% | 2579 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 49,806 psi | 80% | 2667 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,435 psi | 62% | 2543 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 29,762 psi | 48% | 2388 fps | 96.2% |
| Vihtavuori N560 | <<locked>> | 96% | 50,560 psi | 81% | 2864 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,985 psi | 61% | 2510 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 39,827 psi | 64% | 2595 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,411 psi | 41% | 2336 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,279 psi | 69% | 2638 fps | 95.5% |
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 89 powders for .300 H&H Mag. loaded with the .311 | 180gr | Sellier & Bellot SPRN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,989 fps; across all powders the maximum-charge window runs from 1,749 fps to 2,989 fps. Accurate 3100 gives the best case fill at 100 %, and 89 of the 89 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 1:16.5 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for .300 H&H Mag. with the .311 | 180gr | Sellier & Bellot SPRN 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.