Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:160 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Case Length (l3):2.026"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:72.6 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:11.5
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 160gr | Sierra SBT GameKing 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% | 55,753 psi | 86% | 2677 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,666 psi | 87% | 2749 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,534 psi | 84% | 2792 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 55,956 psi | 86% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,768 psi | 87% | 2838 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,724 psi | 87% | 2936 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 58,189 psi | 90% | 2802 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,927 psi | 86% | 2759 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,667 psi | 89% | 2887 fps | 98.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,376 psi | 85% | 2884 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,230 psi | 85% | 2881 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,869 psi | 87% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,985 psi | 88% | 2805 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,290 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,027 psi | 85% | 2864 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,869 psi | 87% | 2874 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,302 psi | 84% | 2881 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,169 psi | 79% | 2808 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,570 psi | 69% | 2743 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,839 psi | 84% | 2946 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 58,537 psi | 90% | 2828 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,806 psi | 77% | 2805 fps | 97.8% |
| Bofors RP3 | <<locked>> | 86% | 57,827 psi | 89% | 2802 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,302 psi | 84% | 2881 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 56,913 psi | 88% | 2789 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 58,015 psi | 89% | 2818 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,172 psi | 85% | 2838 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 90% | 58,595 psi | 90% | 2851 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 98% | 55,317 psi | 85% | 2825 fps | 96.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 58,131 psi | 89% | 2867 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,696 psi | 89% | 2815 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,680 psi | 86% | 2799 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,511 psi | 67% | 2769 fps | 97% |
| Hodgdon Superformance | <<locked>> | 90% | 55,434 psi | 85% | 2877 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,521 psi | 56% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,463 psi | 87% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,303 psi | 85% | 2743 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,972 psi | 89% | 2782 fps | 99.7% |
| IMR 4350 | <<locked>> | 94% | 57,914 psi | 89% | 2825 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 58,682 psi | 90% | 2818 fps | 99.7% |
| IMR 4831 | <<locked>> | 94% | 56,971 psi | 88% | 2828 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 58,436 psi | 90% | 2831 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,000 psi | 88% | 2815 fps | 97.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,750 psi | 81% | 2854 fps | 97.2% |
| Lovex S060 | <<locked>> | 82% | 56,956 psi | 88% | 2730 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,796 psi | 86% | 2740 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 58,668 psi | 90% | 2812 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 56,507 psi | 87% | 2802 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,498 psi | 70% | 2651 fps | 98.9% |
| Norma 201 | <<locked>> | 82% | 57,101 psi | 88% | 2746 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,653 psi | 89% | 2740 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,275 psi | 87% | 2792 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,129 psi | 85% | 2825 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 57,638 psi | 89% | 2959 fps | 99.8% |
| Norma URP | <<locked>> | 92% | 55,332 psi | 85% | 2822 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,159 psi | 88% | 2818 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,040 psi | 82% | 2867 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 94% | 57,957 psi | 89% | 2881 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,195 psi | 73% | 2743 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,231 psi | 57% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 58,001 psi | 89% | 2805 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 58,218 psi | 90% | 2874 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 58,508 psi | 90% | 2907 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,768 psi | 87% | 2864 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,013 psi | 85% | 2890 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,540 psi | 67% | 2766 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 84% | 57,580 psi | 89% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,696 psi | 89% | 2795 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,695 psi | 86% | 2802 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 98% | 56,275 psi | 87% | 2861 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 90% | 56,913 psi | 88% | 2789 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 58,668 psi | 90% | 2812 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 55,796 psi | 86% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,507 psi | 87% | 2802 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,738 psi | 86% | 2805 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,623 psi | 87% | 2776 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,856 psi | 89% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,158 psi | 85% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 58,436 psi | 90% | 2766 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,796 psi | 86% | 2858 fps | 98.8% |
| Somchem S335 | <<locked>> | 82% | 57,493 psi | 88% | 2674 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,740 psi | 89% | 2792 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,682 psi | 89% | 2799 fps | 97.2% |
| Somchem S365 | <<locked>> | 96% | 58,494 psi | 90% | 2874 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,971 psi | 88% | 2838 fps | 99.4% |
| Vihtavuori N133 | <<locked>> | 82% | 58,349 psi | 90% | 2657 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 58,146 psi | 89% | 2703 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 58,378 psi | 90% | 2720 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,303 psi | 85% | 2717 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,508 psi | 88% | 2818 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,475 psi | 81% | 2756 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 84% | 56,362 psi | 87% | 2720 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,550 psi | 87% | 2825 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,217 psi | 88% | 2884 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,870 psi | 89% | 2953 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,145 psi | 88% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,477 psi | 85% | 2841 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,383 psi | 71% | 2871 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,956 psi | 88% | 2785 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,145 psi | 88% | 2831 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% | 52,214 psi | 80% | 2628 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,763 psi | 77% | 2641 fps | 98.3% |
| Accurate 3100 | <<locked>> | 84% | 31,705 psi | 49% | 2365 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 49,472 psi | 76% | 2638 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,681 psi | 58% | 2513 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 49,052 psi | 75% | 2808 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 54,679 psi | 84% | 2753 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,499 psi | 72% | 2615 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,582 psi | 64% | 2605 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 94% | 45,194 psi | 70% | 2700 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,677 psi | 80% | 2828 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,007 psi | 72% | 2635 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,198 psi | 77% | 2703 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,811 psi | 57% | 2526 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,684 psi | 64% | 2648 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,292 psi | 64% | 2598 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,510 psi | 64% | 2651 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,021 psi | 42% | 2293 fps | 96.8% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,460 psi | 50% | 2461 fps | 95.9% |
| Alliant Reloder-26 | 52.8 gr | 82% | 30,763 psi | 47% | 2454 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,723 psi | 84% | 2776 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 40,944 psi | 63% | 2638 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 47,572 psi | 73% | 2651 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,510 psi | 64% | 2651 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 41,655 psi | 64% | 2526 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 47,877 psi | 74% | 2664 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 39,697 psi | 61% | 2562 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 42,699 psi | 66% | 2582 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 94% | 48,457 psi | 75% | 2710 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 47,384 psi | 73% | 2694 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,374 psi | 53% | 2425 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,243 psi | 80% | 2753 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,799 psi | 63% | 2707 fps | 96% |
| Hodgdon Superformance | 53.1 gr | 80% | 38,479 psi | 59% | 2569 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,383 psi | 42% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,026 psi | 82% | 2717 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,921 psi | 75% | 2644 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,213 psi | 79% | 2677 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 37,449 psi | 58% | 2461 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,250 psi | 67% | 2559 fps | 97.6% |
| IMR 4831 | <<locked>> | 80% | 36,260 psi | 56% | 2470 fps | 98.4% |
| IMR 4895 | <<locked>> | 80% | 51,517 psi | 79% | 2730 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,239 psi | 73% | 2654 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 46,195 psi | 71% | 2736 fps | 95.5% |
| Lovex S060 | <<locked>> | 80% | 53,505 psi | 82% | 2677 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,182 psi | 76% | 2641 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,712 psi | 63% | 2510 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 38,928 psi | 60% | 2493 fps | 96.8% |
| Lovex S071 | <<locked>> | 90% | 32,967 psi | 51% | 2395 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 53,606 psi | 82% | 2700 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,085 psi | 83% | 2694 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,574 psi | 76% | 2690 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,192 psi | 65% | 2598 fps | 95.6% |
| Norma MRP | <<locked>> | 86% | 35,650 psi | 55% | 2546 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 37,507 psi | 58% | 2510 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 80% | 50,082 psi | 77% | 2717 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,948 psi | 71% | 2743 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 36,361 psi | 56% | 2497 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 94% | 38,029 psi | 59% | 2559 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,862 psi | 43% | 1572 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,877 psi | 74% | 2648 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,491 psi | 84% | 2822 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,295 psi | 68% | 2697 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,434 psi | 58% | 2533 fps | 98.4% |
| ReloadSwiss RS 70 | 51.1 gr | 80% | 36,434 psi | 56% | 2539 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,826 psi | 58% | 2631 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 51,039 psi | 79% | 2654 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,686 psi | 69% | 2598 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,209 psi | 71% | 2641 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 88% | 40,350 psi | 62% | 2582 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 41,655 psi | 64% | 2526 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,712 psi | 63% | 2510 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 49,182 psi | 76% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,928 psi | 60% | 2493 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,818 psi | 70% | 2651 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,214 psi | 82% | 2726 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,215 psi | 83% | 2628 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,890 psi | 71% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,755 psi | 61% | 2454 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 39,972 psi | 61% | 2575 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 54,056 psi | 83% | 2628 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,034 psi | 69% | 2598 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,372 psi | 77% | 2687 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 34,040 psi | 52% | 2470 fps | 99.9% |
| Somchem S385 | <<locked>> | 86% | 38,493 psi | 59% | 2516 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 54,795 psi | 84% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,256 psi | 79% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,430 psi | 79% | 2631 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,960 psi | 66% | 2530 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,841 psi | 60% | 2507 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 37,782 psi | 58% | 2493 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 49,792 psi | 77% | 2628 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,421 psi | 59% | 2513 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 29,747 psi | 46% | 2365 fps | 96.9% |
| Vihtavuori N560 | <<locked>> | 94% | 47,311 psi | 73% | 2772 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,043 psi | 59% | 2480 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 39,697 psi | 61% | 2562 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,844 psi | 37% | 2260 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,214 psi | 82% | 2733 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,480 psi | 62% | 2552 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 100 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 160gr | Sierra SBT GameKing. 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 100 of the 100 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 160.0 gr projectile in 0.284" calls for a 1:11.5 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 | Sierra SBT GameKing 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.