Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 170gr | Sierra RN Prohunter bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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% | 58,320 psi | 90% | 2621 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 55,419 psi | 85% | 2654 fps | 99.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,972 psi | 89% | 2762 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 58,798 psi | 90% | 2680 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,246 psi | 87% | 2749 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 56,275 psi | 87% | 2851 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 86% | 58,146 psi | 89% | 2713 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,710 psi | 87% | 2795 fps | 99.2% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 58,160 psi | 89% | 2851 fps | 98.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,550 psi | 58% | 2533 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 58,407 psi | 90% | 2841 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,724 psi | 86% | 2687 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,115 psi | 86% | 2710 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,739 psi | 87% | 2799 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 58,102 psi | 89% | 2818 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,318 psi | 87% | 2789 fps | 99.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,392 psi | 88% | 2848 fps | 99.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,273 psi | 83% | 2769 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,036 psi | 72% | 2713 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,621 psi | 84% | 2858 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,649 psi | 81% | 2776 fps | 98.8% |
| Bofors RP3 | <<locked>> | 84% | 56,782 psi | 87% | 2703 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,134 psi | 66% | 2644 fps | 96.3% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,392 psi | 88% | 2848 fps | 99.4% |
| Bofors RP7 | <<locked>> | 88% | 55,970 psi | 86% | 2700 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,586 psi | 72% | 2657 fps | 97.2% |
| Hodgdon H380 | <<locked>> | 84% | 57,159 psi | 88% | 2726 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 58,204 psi | 90% | 2802 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 88% | 57,493 psi | 88% | 2759 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 98% | 58,479 psi | 90% | 2799 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,174 psi | 88% | 2779 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,072 psi | 88% | 2723 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 58,566 psi | 90% | 2753 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,195 psi | 71% | 2759 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 90% | 58,508 psi | 90% | 2841 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,695 psi | 56% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 58,740 psi | 90% | 2713 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,870 psi | 89% | 2697 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,565 psi | 87% | 2684 fps | 99.8% |
| IMR 4350 | <<locked>> | 92% | 57,130 psi | 88% | 2736 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,392 psi | 88% | 2723 fps | 99.8% |
| IMR 4831 | <<locked>> | 92% | 56,434 psi | 87% | 2740 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,580 psi | 89% | 2736 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,970 psi | 86% | 2726 fps | 97.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,579 psi | 86% | 2825 fps | 98.3% |
| Lovex S062 | <<locked>> | 84% | 58,117 psi | 89% | 2687 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,783 psi | 89% | 2720 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 55,796 psi | 86% | 2717 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,124 psi | 74% | 2621 fps | 99.6% |
| Norma 203B | <<locked>> | 82% | 55,405 psi | 85% | 2697 fps | 100% |
| Norma 204 | <<locked>> | 92% | 58,146 psi | 89% | 2792 fps | 99.2% |
| Norma MRP | <<locked>> | 98% | 57,174 psi | 88% | 2871 fps | 99.9% |
| Norma URP | <<locked>> | 92% | 58,392 psi | 90% | 2785 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,202 psi | 86% | 2723 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,072 psi | 86% | 2844 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 92% | 57,159 psi | 88% | 2792 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,328 psi | 77% | 2726 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,449 psi | 58% | 1706 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,869 psi | 87% | 2713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,740 psi | 89% | 2808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,811 psi | 86% | 2772 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 58,276 psi | 90% | 2858 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,093 psi | 71% | 2753 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 82% | 56,536 psi | 87% | 2651 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,913 psi | 88% | 2703 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 58,291 psi | 90% | 2766 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 96% | 55,535 psi | 85% | 2772 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 88% | 55,970 psi | 86% | 2700 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,783 psi | 89% | 2720 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 58,117 psi | 89% | 2687 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,796 psi | 86% | 2717 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 58,349 psi | 90% | 2759 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,624 psi | 89% | 2582 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,421 psi | 88% | 2677 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 58,784 psi | 90% | 2822 fps | 99.5% |
| Somchem S355 | <<locked>> | 86% | 56,637 psi | 87% | 2694 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,420 psi | 87% | 2710 fps | 97.7% |
| Somchem S365 | <<locked>> | 94% | 57,856 psi | 89% | 2779 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,202 psi | 86% | 2749 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 82% | 57,116 psi | 88% | 2608 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 57,043 psi | 88% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 58,044 psi | 89% | 2671 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,826 psi | 87% | 2726 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,593 psi | 86% | 2730 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 82% | 55,172 psi | 85% | 2621 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,651 psi | 86% | 2730 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,985 psi | 88% | 2795 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,261 psi | 88% | 2864 fps | 98.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,124 psi | 76% | 2723 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,289 psi | 87% | 2694 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 58,204 psi | 90% | 2802 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,067 psi | 77% | 2841 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,231 psi | 87% | 2746 fps | 99.1% |
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% | 54,636 psi | 84% | 2579 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,808 psi | 80% | 2602 fps | 99% |
| Accurate 3100 | <<locked>> | 80% | 29,544 psi | 45% | 2244 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 51,822 psi | 80% | 2589 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,030 psi | 62% | 2490 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 45,368 psi | 70% | 2671 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 48,660 psi | 75% | 2575 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,479 psi | 59% | 2470 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 44,686 psi | 69% | 2625 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 96% | 33,156 psi | 51% | 2418 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 54,331 psi | 84% | 2782 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,371 psi | 76% | 2595 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,678 psi | 81% | 2661 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,638 psi | 59% | 2493 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,990 psi | 68% | 2612 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,363 psi | 59% | 2467 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,450 psi | 59% | 2516 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,471 psi | 44% | 2274 fps | 98.2% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,284 psi | 47% | 2336 fps | 95.8% |
| Alliant Reloder-26 | 51.6 gr | 80% | 30,545 psi | 47% | 2385 fps | 96.9% |
| Bofors RP15 | <<locked>> | 90% | 38,189 psi | 59% | 2507 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 49,893 psi | 77% | 2608 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,364 psi | 62% | 2589 fps | 95.4% |
| Bofors RP5 | <<locked>> | 88% | 38,450 psi | 59% | 2516 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 43,685 psi | 67% | 2497 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 40,814 psi | 63% | 2543 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 50,053 psi | 77% | 2625 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 41,756 psi | 64% | 2533 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 44,672 psi | 69% | 2549 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 44,628 psi | 69% | 2572 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,891 psi | 72% | 2615 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,260 psi | 56% | 2392 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 54,679 psi | 84% | 2703 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 38,145 psi | 59% | 2579 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 40,698 psi | 63% | 2546 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 42% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 55,143 psi | 85% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,213 psi | 79% | 2602 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,156 psi | 82% | 2631 fps | 99.6% |
| IMR 4350 | <<locked>> | 80% | 39,204 psi | 60% | 2428 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,020 psi | 69% | 2523 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 38,189 psi | 59% | 2438 fps | 99.2% |
| IMR 4895 | <<locked>> | 80% | 54,070 psi | 83% | 2687 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,787 psi | 67% | 2520 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 92% | 42,670 psi | 66% | 2598 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 51,532 psi | 79% | 2598 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,525 psi | 65% | 2477 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 40,741 psi | 63% | 2461 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 30,908 psi | 48% | 2280 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 52,040 psi | 80% | 2648 fps | 100% |
| Norma 204 | <<locked>> | 80% | 38,682 psi | 60% | 2454 fps | 95.3% |
| Norma MRP | 51.3 gr | 82% | 32,895 psi | 51% | 2411 fps | 95% |
| Norma URP | <<locked>> | 80% | 39,465 psi | 61% | 2477 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 80% | 52,489 psi | 81% | 2671 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 42,395 psi | 65% | 2605 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 38,290 psi | 59% | 2467 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 34,983 psi | 54% | 2428 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,065 psi | 43% | 1526 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,966 psi | 77% | 2608 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,688 psi | 72% | 2654 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,784 psi | 61% | 2507 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,348 psi | 59% | 2516 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,998 psi | 54% | 2500 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 53,113 psi | 82% | 2605 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,847 psi | 72% | 2556 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,511 psi | 65% | 2503 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 37,463 psi | 58% | 2451 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 43,685 psi | 67% | 2497 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,525 psi | 65% | 2477 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 51,532 psi | 79% | 2598 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,741 psi | 63% | 2461 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,037 psi | 74% | 2612 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,008 psi | 74% | 2457 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,684 psi | 64% | 2428 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,115 psi | 57% | 2448 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 47,079 psi | 72% | 2556 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,369 psi | 71% | 2549 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 36,114 psi | 56% | 2441 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,636 psi | 55% | 2385 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 53,809 psi | 83% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,577 psi | 82% | 2579 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,904 psi | 69% | 2487 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,060 psi | 63% | 2477 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 35,143 psi | 54% | 2369 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 51,880 psi | 80% | 2579 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,364 psi | 62% | 2480 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 31,647 psi | 49% | 2343 fps | 98.2% |
| Vihtavuori N560 | 56.3 gr | 90% | 43,656 psi | 67% | 2635 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 96% | 42,801 psi | 66% | 2608 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,885 psi | 61% | 2444 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,989 psi | 65% | 2536 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,150 psi | 39% | 2257 fps | 97.6% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,929 psi | 61% | 2474 fps | 95.9% |
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 93 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 170gr | Sierra RN Prohunter. Norma MRP delivers the highest muzzle velocity at 2,871 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,871 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, ADI AR 2225 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, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 170gr | Sierra RN Prohunter 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.