Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 168gr | Sierra MatchKing bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Alliant Reloder-17.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 56,666 psi | 87% | 2615 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,740 psi | 89% | 2697 fps | 99.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,956 psi | 86% | 2746 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 57,276 psi | 88% | 2674 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 58,276 psi | 90% | 2789 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 58,204 psi | 90% | 2894 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 86% | 56,811 psi | 87% | 2703 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,172 psi | 85% | 2782 fps | 98.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,463 psi | 87% | 2835 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,318 psi | 56% | 2510 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,463 psi | 87% | 2828 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,928 psi | 89% | 2726 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 58,305 psi | 90% | 2753 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 58,740 psi | 90% | 2838 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,289 psi | 87% | 2808 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 58,175 psi | 89% | 2825 fps | 99.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,448 psi | 85% | 2828 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,562 psi | 81% | 2759 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,701 psi | 70% | 2700 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,420 psi | 87% | 2897 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,836 psi | 78% | 2756 fps | 98.3% |
| Bofors RP3 | <<locked>> | 84% | 55,288 psi | 85% | 2697 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,448 psi | 85% | 2828 fps | 99.1% |
| Bofors RP7 | <<locked>> | 90% | 58,044 psi | 89% | 2740 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,397 psi | 70% | 2641 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 84% | 55,477 psi | 85% | 2713 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,536 psi | 87% | 2792 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 88% | 56,217 psi | 86% | 2749 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 98% | 56,637 psi | 87% | 2779 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,405 psi | 85% | 2762 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,361 psi | 85% | 2713 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,782 psi | 87% | 2743 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,686 psi | 69% | 2736 fps | 98% |
| Hodgdon Superformance | <<locked>> | 90% | 56,594 psi | 87% | 2825 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 56% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,334 psi | 88% | 2707 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,449 psi | 87% | 2690 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,622 psi | 86% | 2680 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 55,680 psi | 86% | 2723 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,188 psi | 86% | 2713 fps | 99.7% |
| IMR 4831 | <<locked>> | 94% | 58,450 psi | 90% | 2779 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,115 psi | 86% | 2726 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 58,146 psi | 89% | 2766 fps | 97.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,780 psi | 83% | 2808 fps | 97.8% |
| Lovex S060 | <<locked>> | 82% | 57,957 psi | 89% | 2671 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,695 psi | 87% | 2680 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,231 psi | 87% | 2710 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 57,798 psi | 89% | 2753 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,586 psi | 72% | 2608 fps | 99.3% |
| Norma 201 | <<locked>> | 82% | 57,914 psi | 89% | 2687 fps | 100% |
| Norma 202 | <<locked>> | 82% | 58,813 psi | 90% | 2684 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,595 psi | 89% | 2740 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,275 psi | 87% | 2776 fps | 98.9% |
| Norma MRP | <<locked>> | 98% | 55,143 psi | 85% | 2854 fps | 99.8% |
| Norma URP | <<locked>> | 92% | 56,652 psi | 87% | 2772 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 58,436 psi | 90% | 2766 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,259 psi | 83% | 2825 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 92% | 55,274 psi | 85% | 2776 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,385 psi | 74% | 2703 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,246 psi | 57% | 1706 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,274 psi | 85% | 2700 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,854 psi | 86% | 2799 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 58,131 psi | 89% | 2812 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,289 psi | 87% | 2841 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,686 psi | 69% | 2733 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 84% | 58,784 psi | 90% | 2690 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,477 psi | 85% | 2694 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,826 psi | 87% | 2753 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 98% | 57,624 psi | 89% | 2815 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 90% | 58,044 psi | 89% | 2740 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,231 psi | 87% | 2710 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 56,695 psi | 87% | 2680 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,798 psi | 89% | 2753 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,985 psi | 88% | 2753 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,914 psi | 89% | 2723 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,260 psi | 87% | 2579 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,927 psi | 86% | 2667 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,145 psi | 88% | 2808 fps | 99.2% |
| Somchem S335 | <<locked>> | 82% | 58,262 psi | 90% | 2615 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 55,187 psi | 85% | 2687 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 58,697 psi | 90% | 2749 fps | 97.8% |
| Somchem S365 | <<locked>> | 94% | 55,999 psi | 86% | 2769 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 58,073 psi | 89% | 2785 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 82% | 55,869 psi | 86% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,956 psi | 86% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,405 psi | 87% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,187 psi | 85% | 2717 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,795 psi | 83% | 2713 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 84% | 57,348 psi | 88% | 2661 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,638 psi | 89% | 2769 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 58,726 psi | 90% | 2831 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,376 psi | 85% | 2848 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,384 psi | 73% | 2703 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 58,494 psi | 90% | 2730 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,536 psi | 87% | 2792 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,761 psi | 73% | 2828 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 58,044 psi | 89% | 2730 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 58,378 psi | 90% | 2782 fps | 99.2% |
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% | 53,359 psi | 82% | 2575 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,589 psi | 78% | 2592 fps | 98.7% |
| Accurate 3100 | <<locked>> | 82% | 30,530 psi | 47% | 2280 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 50,575 psi | 78% | 2585 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,711 psi | 60% | 2474 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 46,963 psi | 72% | 2710 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 47,384 psi | 73% | 2562 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 39,987 psi | 62% | 2513 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 43,410 psi | 67% | 2608 fps | 95% |
| ADI AR 2225 | <<locked>> | 98% | 34,098 psi | 52% | 2451 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,794 psi | 81% | 2776 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,993 psi | 74% | 2585 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,285 psi | 79% | 2654 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,623 psi | 58% | 2484 fps | 99.3% |
| Alliant Reloder-17 | 49.4 gr | 80% | 42,641 psi | 66% | 2598 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,581 psi | 61% | 2503 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,958 psi | 61% | 2556 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,673 psi | 43% | 2260 fps | 97.7% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,428 psi | 45% | 2320 fps | 95% |
| Alliant Reloder-26 | 50.6 gr | 80% | 29,385 psi | 45% | 2362 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 39,421 psi | 61% | 2543 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 48,486 psi | 75% | 2598 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,958 psi | 61% | 2556 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 42,511 psi | 65% | 2484 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 42,438 psi | 65% | 2582 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 48,704 psi | 75% | 2612 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 40,524 psi | 62% | 2516 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 43,453 psi | 67% | 2536 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 46,296 psi | 71% | 2612 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 45,542 psi | 70% | 2598 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,244 psi | 54% | 2382 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,243 psi | 82% | 2694 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 36,811 psi | 57% | 2552 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 39,407 psi | 61% | 2530 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 42% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,780 psi | 83% | 2657 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,864 psi | 77% | 2595 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,185 psi | 80% | 2628 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 38,116 psi | 59% | 2415 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,859 psi | 67% | 2510 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 37,173 psi | 57% | 2428 fps | 98.9% |
| IMR 4895 | <<locked>> | 80% | 52,605 psi | 81% | 2677 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,310 psi | 70% | 2559 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 94% | 44,208 psi | 68% | 2638 fps | 95.5% |
| Lovex S060 | <<locked>> | 80% | 54,418 psi | 84% | 2625 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,140 psi | 77% | 2589 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,568 psi | 64% | 2467 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 39,798 psi | 61% | 2451 fps | 97.5% |
| Lovex S071 | <<locked>> | 88% | 31,763 psi | 49% | 2310 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 54,621 psi | 84% | 2644 fps | 100% |
| Norma 202 | <<locked>> | 80% | 55,158 psi | 85% | 2638 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,633 psi | 78% | 2641 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,379 psi | 62% | 2500 fps | 95.6% |
| Norma MRP | <<locked>> | 84% | 34,069 psi | 52% | 2451 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 38,464 psi | 59% | 2470 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 80% | 51,140 psi | 79% | 2664 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,019 psi | 68% | 2648 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 37,159 psi | 57% | 2457 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 36,448 psi | 56% | 2470 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,949 psi | 43% | 1526 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,733 psi | 75% | 2598 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,281 psi | 70% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,522 psi | 59% | 2493 fps | 98.9% |
| ReloadSwiss RS 70 | 50.2 gr | 80% | 37,246 psi | 57% | 2503 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,245 psi | 56% | 2539 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 51,982 psi | 80% | 2598 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,716 psi | 70% | 2552 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,208 psi | 68% | 2546 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 38,638 psi | 59% | 2487 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,511 psi | 65% | 2484 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,568 psi | 64% | 2467 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,140 psi | 77% | 2589 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,798 psi | 61% | 2451 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,702 psi | 72% | 2602 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,128 psi | 83% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,702 psi | 72% | 2451 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,611 psi | 62% | 2415 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,276 psi | 59% | 2484 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 55,027 psi | 85% | 2572 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,977 psi | 71% | 2549 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,051 psi | 74% | 2585 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 34,824 psi | 54% | 2428 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 36,927 psi | 57% | 2421 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 52,272 psi | 80% | 2559 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,489 psi | 81% | 2575 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,874 psi | 67% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,798 psi | 61% | 2464 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,245 psi | 56% | 2402 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 50,604 psi | 78% | 2572 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,189 psi | 60% | 2467 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 30,647 psi | 47% | 2329 fps | 97.7% |
| Vihtavuori N560 | <<locked>> | 92% | 45,150 psi | 69% | 2671 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 98% | 44,295 psi | 68% | 2651 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,841 psi | 60% | 2438 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 40,756 psi | 63% | 2523 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,366 psi | 37% | 2234 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,476 psi | 84% | 2680 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 38,653 psi | 59% | 2457 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 98 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 168gr | Sierra MatchKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,897 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,897 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 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 168.0 gr projectile in 0.284" calls for a 1:10.5 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. Alliant Reloder-26, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 168gr | Sierra MatchKing 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.