Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 160gr | Woodleigh PP SN 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 70, Alliant Reloder-26 and Hodgdon Superformance.
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% | 55,535 psi | 85% | 2671 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,782 psi | 87% | 2749 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,302 psi | 84% | 2789 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 56,043 psi | 86% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,869 psi | 87% | 2841 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,565 psi | 87% | 2933 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 58,334 psi | 90% | 2802 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,028 psi | 86% | 2762 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,493 psi | 88% | 2884 fps | 98.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,172 psi | 85% | 2877 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,303 psi | 85% | 2881 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,681 psi | 87% | 2779 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,058 psi | 88% | 2805 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,377 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,882 psi | 84% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,000 psi | 88% | 2874 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,114 psi | 83% | 2874 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,995 psi | 78% | 2805 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,411 psi | 68% | 2736 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,955 psi | 85% | 2946 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 58,320 psi | 90% | 2825 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,617 psi | 76% | 2802 fps | 97.7% |
| Bofors RP3 | <<locked>> | 86% | 57,653 psi | 89% | 2799 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,114 psi | 83% | 2874 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 57,029 psi | 88% | 2789 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 58,131 psi | 89% | 2818 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,259 psi | 85% | 2838 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 90% | 58,421 psi | 90% | 2848 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 98% | 55,434 psi | 85% | 2825 fps | 96.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,972 psi | 89% | 2861 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,783 psi | 89% | 2812 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,782 psi | 86% | 2799 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,598 psi | 67% | 2772 fps | 97% |
| Hodgdon Superformance | <<locked>> | 90% | 55,230 psi | 85% | 2874 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,564 psi | 56% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,275 psi | 87% | 2759 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,405 psi | 85% | 2743 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 58,102 psi | 89% | 2782 fps | 99.7% |
| IMR 4350 | <<locked>> | 94% | 58,059 psi | 89% | 2825 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 58,508 psi | 90% | 2815 fps | 99.7% |
| IMR 4831 | <<locked>> | 94% | 57,072 psi | 88% | 2828 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 58,581 psi | 90% | 2831 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,840 psi | 87% | 2812 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,605 psi | 81% | 2848 fps | 97.1% |
| Lovex S060 | <<locked>> | 82% | 56,739 psi | 87% | 2723 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,622 psi | 86% | 2736 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 58,755 psi | 90% | 2812 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 56,637 psi | 87% | 2802 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,295 psi | 70% | 2648 fps | 98.9% |
| Norma 201 | <<locked>> | 82% | 56,913 psi | 88% | 2746 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,725 psi | 89% | 2740 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,347 psi | 87% | 2792 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,259 psi | 85% | 2825 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 57,754 psi | 89% | 2959 fps | 99.8% |
| Norma URP | <<locked>> | 94% | 58,813 psi | 90% | 2871 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,305 psi | 88% | 2822 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,837 psi | 81% | 2864 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 94% | 57,754 psi | 89% | 2877 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,311 psi | 73% | 2746 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,275 psi | 57% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,812 psi | 89% | 2802 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 58,291 psi | 90% | 2874 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 58,305 psi | 90% | 2904 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,550 psi | 87% | 2861 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,100 psi | 85% | 2894 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,424 psi | 67% | 2762 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 57,725 psi | 89% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,812 psi | 89% | 2795 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,535 psi | 85% | 2795 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 98% | 56,101 psi | 86% | 2858 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 57,029 psi | 88% | 2789 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 58,755 psi | 90% | 2812 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 55,622 psi | 86% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,637 psi | 87% | 2802 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,550 psi | 85% | 2802 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,753 psi | 87% | 2776 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,624 psi | 89% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 58,595 psi | 90% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 58,552 psi | 90% | 2766 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,608 psi | 86% | 2851 fps | 98.7% |
| Somchem S335 | <<locked>> | 82% | 57,319 psi | 88% | 2671 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,580 psi | 89% | 2789 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,464 psi | 88% | 2795 fps | 97.2% |
| Somchem S365 | <<locked>> | 96% | 58,305 psi | 90% | 2871 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,826 psi | 87% | 2835 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 82% | 58,175 psi | 89% | 2654 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,899 psi | 89% | 2700 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 58,175 psi | 89% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,463 psi | 85% | 2717 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,595 psi | 89% | 2818 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,286 psi | 80% | 2753 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 84% | 56,492 psi | 87% | 2720 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,652 psi | 87% | 2825 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,319 psi | 88% | 2884 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,972 psi | 89% | 2953 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,276 psi | 88% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,259 psi | 85% | 2838 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,195 psi | 71% | 2867 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,797 psi | 87% | 2782 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,942 psi | 88% | 2828 fps | 98.7% |
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% | 52,025 psi | 80% | 2625 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,835 psi | 77% | 2641 fps | 98.3% |
| Accurate 3100 | <<locked>> | 84% | 31,778 psi | 49% | 2365 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 49,327 psi | 76% | 2635 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,753 psi | 58% | 2513 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 49,153 psi | 76% | 2812 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 54,795 psi | 84% | 2753 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,586 psi | 72% | 2615 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,669 psi | 64% | 2605 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 94% | 45,281 psi | 70% | 2703 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,459 psi | 79% | 2822 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,065 psi | 72% | 2638 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,270 psi | 77% | 2703 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,637 psi | 56% | 2520 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,539 psi | 64% | 2641 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,365 psi | 64% | 2598 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,582 psi | 64% | 2651 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,905 psi | 41% | 2287 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,518 psi | 50% | 2461 fps | 95.9% |
| Alliant Reloder-26 | 52.8 gr | 82% | 30,821 psi | 47% | 2457 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,534 psi | 84% | 2772 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 40,770 psi | 63% | 2631 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 47,413 psi | 73% | 2648 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,582 psi | 64% | 2651 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 41,727 psi | 64% | 2526 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 80% | 47,688 psi | 73% | 2657 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 39,566 psi | 61% | 2556 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 42,569 psi | 65% | 2579 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 94% | 48,269 psi | 74% | 2707 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 47,529 psi | 73% | 2694 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,229 psi | 53% | 2418 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,025 psi | 80% | 2746 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,944 psi | 63% | 2707 fps | 96.1% |
| Hodgdon Superformance | 53.1 gr | 80% | 38,566 psi | 59% | 2569 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 42% | 1529 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,837 psi | 81% | 2710 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,008 psi | 75% | 2644 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,053 psi | 79% | 2674 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 37,318 psi | 57% | 2454 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,091 psi | 66% | 2556 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 36,318 psi | 56% | 2470 fps | 98.4% |
| IMR 4895 | <<locked>> | 80% | 51,590 psi | 79% | 2730 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,326 psi | 73% | 2654 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 46,050 psi | 71% | 2730 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 53,621 psi | 82% | 2680 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,255 psi | 76% | 2641 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,567 psi | 62% | 2507 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 38,986 psi | 60% | 2493 fps | 96.8% |
| Lovex S071 | <<locked>> | 90% | 32,837 psi | 51% | 2392 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 53,403 psi | 82% | 2697 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,201 psi | 83% | 2694 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,661 psi | 76% | 2690 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,032 psi | 65% | 2592 fps | 95.5% |
| Norma MRP | <<locked>> | 86% | 35,505 psi | 55% | 2543 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 37,565 psi | 58% | 2510 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 80% | 49,937 psi | 77% | 2713 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,050 psi | 71% | 2743 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 36,230 psi | 56% | 2493 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 94% | 38,087 psi | 59% | 2562 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,688 psi | 43% | 1565 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,703 psi | 73% | 2644 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,273 psi | 83% | 2818 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,150 psi | 68% | 2694 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,492 psi | 58% | 2533 fps | 98.4% |
| ReloadSwiss RS 70 | 51 gr | 80% | 36,318 psi | 56% | 2536 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,739 psi | 58% | 2628 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 51,111 psi | 79% | 2654 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,759 psi | 69% | 2598 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,021 psi | 71% | 2638 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 88% | 40,422 psi | 62% | 2582 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 41,727 psi | 64% | 2526 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,567 psi | 62% | 2507 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 49,255 psi | 76% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,986 psi | 60% | 2493 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,658 psi | 70% | 2648 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,069 psi | 82% | 2723 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,288 psi | 84% | 2628 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,977 psi | 71% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,813 psi | 61% | 2454 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,045 psi | 62% | 2575 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 53,896 psi | 83% | 2625 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,846 psi | 69% | 2595 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,459 psi | 78% | 2687 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 33,895 psi | 52% | 2467 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 38,363 psi | 59% | 2510 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 54,882 psi | 84% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,387 psi | 79% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,561 psi | 79% | 2631 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,018 psi | 66% | 2530 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,928 psi | 60% | 2507 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 37,855 psi | 58% | 2493 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 49,632 psi | 76% | 2625 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,290 psi | 59% | 2507 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 29,631 psi | 46% | 2359 fps | 96.8% |
| Vihtavuori N560 | <<locked>> | 94% | 47,137 psi | 73% | 2769 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,927 psi | 58% | 2477 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 39,784 psi | 61% | 2562 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,743 psi | 37% | 2254 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,316 psi | 82% | 2733 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,364 psi | 62% | 2549 fps | 95.2% |
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 107 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 160gr | Woodleigh PP SN. Norma MRP delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,959 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-26, Hodgdon Superformance rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 160gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.