Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .285 | 173gr | Prvi Partizan SP bullet and 90 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 2700 | <<locked>> | 82% | 56,333 psi | 87% | 2648 fps | 99.6% |
| Accurate 3100 | <<locked>> | 98% | 55,288 psi | 85% | 2703 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,231 psi | 87% | 2625 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,087 psi | 88% | 2740 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 57,435 psi | 88% | 2851 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 84% | 55,550 psi | 85% | 2654 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,740 psi | 89% | 2789 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 98% | 55,463 psi | 85% | 2792 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,290 psi | 59% | 2533 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,724 psi | 87% | 2677 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,797 psi | 87% | 2697 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,827 psi | 89% | 2792 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,521 psi | 85% | 2759 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,101 psi | 88% | 2779 fps | 99.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 58,552 psi | 90% | 2841 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,448 psi | 85% | 2759 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,993 psi | 74% | 2710 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,941 psi | 86% | 2854 fps | 100% |
| Baschieri & Pellagri 109ᴾ | <<locked>> | 100% | 57,798 psi | 89% | 2753 fps | 96% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,722 psi | 83% | 2772 fps | 99.1% |
| Bofors RP3 | <<locked>> | 84% | 57,812 psi | 89% | 2694 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,106 psi | 68% | 2644 fps | 96.8% |
| Bofors RP5ᴾ | <<locked>> | 100% | 58,552 psi | 90% | 2841 fps | 99.6% |
| Bofors RP7 | <<locked>> | 88% | 56,898 psi | 88% | 2694 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,500 psi | 73% | 2657 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 84% | 57,841 psi | 89% | 2713 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,361 psi | 85% | 2740 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 88% | 58,494 psi | 90% | 2753 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 96% | 55,753 psi | 86% | 2736 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 98% | 58,247 psi | 90% | 2772 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 58,204 psi | 90% | 2713 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,166 psi | 73% | 2759 fps | 99% |
| Hodgdon Superformance | <<locked>> | 88% | 55,622 psi | 86% | 2779 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,825 psi | 57% | 1657 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 58,494 psi | 90% | 2684 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,450 psi | 88% | 2677 fps | 99.9% |
| IMR 4350 | <<locked>> | 92% | 57,856 psi | 89% | 2723 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 58,320 psi | 90% | 2713 fps | 99.9% |
| IMR 4831 | <<locked>> | 92% | 57,522 psi | 88% | 2730 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 58,276 psi | 90% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,840 psi | 87% | 2720 fps | 98.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,652 psi | 87% | 2822 fps | 98.7% |
| Lovex S062 | <<locked>> | 82% | 55,535 psi | 85% | 2631 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 58,755 psi | 90% | 2710 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 56,753 psi | 87% | 2707 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,168 psi | 76% | 2618 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 56,086 psi | 86% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,201 psi | 85% | 2726 fps | 99% |
| Norma MRP | <<locked>> | 98% | 58,407 psi | 90% | 2867 fps | 100% |
| Norma URP | <<locked>> | 90% | 55,782 psi | 86% | 2726 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,927 psi | 88% | 2710 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,290 psi | 88% | 2841 fps | 99% |
| Ramshot Hunter | <<locked>> | 92% | 57,899 psi | 89% | 2779 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,372 psi | 79% | 2723 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,608 psi | 58% | 1696 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 57,769 psi | 89% | 2703 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,868 psi | 84% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,942 psi | 88% | 2762 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,376 psi | 85% | 2792 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,050 psi | 72% | 2753 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 82% | 57,479 psi | 88% | 2641 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 57,986 psi | 89% | 2694 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,637 psi | 86% | 2707 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 96% | 56,565 psi | 87% | 2766 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 88% | 56,898 psi | 88% | 2694 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 58,755 psi | 90% | 2710 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 55,535 psi | 85% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,753 psi | 87% | 2707 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,811 psi | 86% | 2700 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 58,233 psi | 90% | 2569 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 58,378 psi | 90% | 2671 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,101 psi | 86% | 2762 fps | 99.4% |
| Somchem S355 | <<locked>> | 86% | 57,595 psi | 89% | 2684 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 57,363 psi | 88% | 2703 fps | 98% |
| Somchem S365 | <<locked>> | 92% | 55,259 psi | 85% | 2723 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,261 psi | 88% | 2743 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 82% | 57,812 psi | 89% | 2592 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 58,001 psi | 89% | 2612 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 55,434 psi | 85% | 2615 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 57,551 psi | 89% | 2713 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,652 psi | 87% | 2723 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 82% | 56,072 psi | 86% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,681 psi | 87% | 2723 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 58,189 psi | 90% | 2785 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 58,421 psi | 90% | 2861 fps | 98.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,256 psi | 77% | 2723 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,319 psi | 88% | 2684 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,622 psi | 86% | 2746 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,605 psi | 79% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,305 psi | 88% | 2740 fps | 99.3% |
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 2700 | <<locked>> | 80% | 52,663 psi | 81% | 2595 fps | 99.3% |
| Accurate 3100 | <<locked>> | 80% | 30,110 psi | 46% | 2241 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 52,779 psi | 81% | 2579 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,727 psi | 63% | 2480 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 92% | 46,383 psi | 71% | 2671 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 49,240 psi | 76% | 2562 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,247 psi | 60% | 2470 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 90% | 42,453 psi | 65% | 2562 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 96% | 33,794 psi | 52% | 2421 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,009 psi | 77% | 2582 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,330 psi | 82% | 2651 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,407 psi | 61% | 2490 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,933 psi | 69% | 2605 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 36,506 psi | 56% | 2408 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,811 psi | 57% | 2457 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,095 psi | 45% | 2274 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,022 psi | 45% | 2283 fps | 95.4% |
| Alliant Reloder-26 | 51.7 gr | 80% | 31,082 psi | 48% | 2382 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 54,534 psi | 84% | 2703 fps | 95.2% |
| Bofors RP15 | <<locked>> | 88% | 36,564 psi | 56% | 2451 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 50,560 psi | 78% | 2595 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 38,464 psi | 59% | 2530 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 36,811 psi | 57% | 2457 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 44,222 psi | 68% | 2487 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 94% | 38,928 psi | 60% | 2487 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 50,952 psi | 78% | 2615 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,598 psi | 66% | 2526 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 80% | 45,237 psi | 70% | 2539 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 45,498 psi | 70% | 2572 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,512 psi | 68% | 2552 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,101 psi | 57% | 2388 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,332 psi | 56% | 2516 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 41,553 psi | 64% | 2546 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,485 psi | 42% | 1476 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,822 psi | 80% | 2592 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,012 psi | 83% | 2625 fps | 99.7% |
| IMR 4350 | <<locked>> | 80% | 39,929 psi | 61% | 2425 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,527 psi | 70% | 2513 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 39,030 psi | 60% | 2434 fps | 99.5% |
| IMR 4895 | <<locked>> | 80% | 54,737 psi | 84% | 2674 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,324 psi | 68% | 2513 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 43,497 psi | 67% | 2595 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 52,156 psi | 80% | 2585 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,294 psi | 67% | 2470 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 41,495 psi | 64% | 2454 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 29,573 psi | 45% | 2228 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 52,692 psi | 81% | 2638 fps | 100% |
| Norma 204 | <<locked>> | 80% | 39,450 psi | 61% | 2454 fps | 95.8% |
| Norma MRP | 51.5 gr | 82% | 33,620 psi | 52% | 2411 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 40,306 psi | 62% | 2474 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 80% | 53,432 psi | 82% | 2664 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 40,248 psi | 62% | 2543 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 39,102 psi | 60% | 2467 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 90% | 35,708 psi | 55% | 2428 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 43% | 1512 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,807 psi | 78% | 2602 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,703 psi | 73% | 2648 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,480 psi | 62% | 2500 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,117 psi | 60% | 2513 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,344 psi | 51% | 2438 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 53,983 psi | 83% | 2595 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,776 psi | 74% | 2549 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 40,611 psi | 62% | 2448 fps | 95% |
| Rottweil R 905 | <<locked>> | 82% | 35,795 psi | 55% | 2395 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 44,222 psi | 68% | 2487 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,294 psi | 67% | 2470 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 52,156 psi | 80% | 2585 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,495 psi | 64% | 2454 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,936 psi | 75% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,559 psi | 75% | 2444 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,235 psi | 65% | 2418 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,710 psi | 58% | 2441 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 47,921 psi | 74% | 2546 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 44,164 psi | 68% | 2493 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 36,999 psi | 57% | 2438 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,924 psi | 52% | 2326 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 54,491 psi | 84% | 2549 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 54,476 psi | 84% | 2569 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,716 psi | 70% | 2477 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,655 psi | 64% | 2470 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 35,665 psi | 55% | 2362 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 52,736 psi | 81% | 2569 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,162 psi | 63% | 2474 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 32,430 psi | 50% | 2343 fps | 98.6% |
| Vihtavuori N560 | 56.5 gr | 90% | 44,570 psi | 69% | 2631 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 94% | 41,017 psi | 63% | 2556 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,654 psi | 63% | 2441 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,598 psi | 66% | 2526 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,715 psi | 40% | 2264 fps | 98.3% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,927 psi | 58% | 2415 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 90 powders for 7 mm Rem. SA Ultra Mag. loaded with the .285 | 173gr | Prvi Partizan SP. Norma MRP delivers the highest muzzle velocity at 2,867 fps; across all powders the maximum-charge window runs from 1,657 fps to 2,867 fps. ADI AR 2225 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 173.0 gr projectile in 0.285" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-22, Alliant Reloder-23 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 .285 | 173gr | Prvi Partizan SP 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.