Load Specifications
Bullet:.284 | 160gr | Barnes MRX BT
Bullet Manufacturer:Barnes
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:1:12.0
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 160gr | Barnes MRX BT bullet and 106 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 Alliant Reloder-16.
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>> | 84% | 57,638 psi | 89% | 2707 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,840 psi | 86% | 2743 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,127 psi | 82% | 2779 fps | 99.7% |
| Accurate 4064 | <<locked>> | 86% | 58,175 psi | 89% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,492 psi | 85% | 2828 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 55,622 psi | 86% | 2923 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 82% | 57,377 psi | 88% | 2799 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 58,494 psi | 90% | 2802 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,826 psi | 87% | 2881 fps | 98.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,462 psi | 84% | 2874 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 58,508 psi | 90% | 2933 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,651 psi | 86% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,072 psi | 86% | 2799 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,449 psi | 87% | 2884 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,914 psi | 89% | 2907 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,985 psi | 86% | 2864 fps | 98.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,272 psi | 82% | 2867 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,125 psi | 77% | 2799 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,569 psi | 67% | 2726 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,957 psi | 89% | 2992 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,392 psi | 88% | 2818 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,472 psi | 75% | 2785 fps | 97.5% |
| Bofors RP3 | <<locked>> | 86% | 56,391 psi | 87% | 2789 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,272 psi | 82% | 2867 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 55,999 psi | 86% | 2782 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 57,000 psi | 88% | 2812 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 57,841 psi | 89% | 2881 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 90% | 57,769 psi | 89% | 2844 fps | 99.1% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 58,247 psi | 90% | 2874 fps | 97.4% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,246 psi | 88% | 2858 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 82% | 58,059 psi | 89% | 2805 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,739 psi | 87% | 2805 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 58,465 psi | 90% | 2844 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,525 psi | 65% | 2753 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 92% | 58,624 psi | 90% | 2927 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,434 psi | 56% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,448 psi | 85% | 2756 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 58,813 psi | 90% | 2776 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 58,160 psi | 89% | 2789 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,290 psi | 88% | 2776 fps | 99.6% |
| IMR 4350 | <<locked>> | 94% | 57,101 psi | 88% | 2818 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,682 psi | 89% | 2808 fps | 99.6% |
| IMR 4831 | <<locked>> | 94% | 55,883 psi | 86% | 2818 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 57,566 psi | 89% | 2825 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,188 psi | 86% | 2805 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,808 psi | 80% | 2844 fps | 97% |
| Lovex D073.6 | <<locked>> | 82% | 57,841 psi | 89% | 2769 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,970 psi | 86% | 2720 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 58,160 psi | 89% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,696 psi | 89% | 2802 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 55,506 psi | 85% | 2795 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,903 psi | 68% | 2631 fps | 98.7% |
| Norma 201 | <<locked>> | 82% | 55,825 psi | 86% | 2736 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,753 psi | 87% | 2733 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,361 psi | 85% | 2785 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,957 psi | 89% | 2871 fps | 98.8% |
| Norma MRPᴾ | <<locked>> | 100% | 56,521 psi | 87% | 2949 fps | 99.7% |
| Norma URP | <<locked>> | 94% | 58,015 psi | 89% | 2867 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,275 psi | 87% | 2812 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,011 psi | 80% | 2858 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 94% | 56,695 psi | 87% | 2871 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,108 psi | 71% | 2730 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,854 psi | 57% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,130 psi | 88% | 2799 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,276 psi | 88% | 2867 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,580 psi | 89% | 2900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,361 psi | 85% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 58,088 psi | 89% | 2940 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,453 psi | 65% | 2749 fps | 97.8% |
| Rottweil R 902 | <<locked>> | 84% | 56,608 psi | 87% | 2740 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,565 psi | 87% | 2785 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 58,581 psi | 90% | 2848 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 98% | 54,984 psi | 85% | 2848 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 90% | 55,999 psi | 86% | 2782 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,696 psi | 89% | 2802 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,841 psi | 89% | 2769 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 58,160 psi | 89% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,506 psi | 85% | 2795 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 58,479 psi | 90% | 2848 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 58,769 psi | 90% | 2808 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,840 psi | 86% | 2772 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,782 psi | 87% | 2667 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,740 psi | 89% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,464 psi | 88% | 2759 fps | 99.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 58,349 psi | 90% | 2900 fps | 99.1% |
| Somchem S335 | <<locked>> | 82% | 56,347 psi | 87% | 2664 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 58,378 psi | 90% | 2789 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,434 psi | 87% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,710 psi | 87% | 2789 fps | 97.1% |
| Somchem S365 | <<locked>> | 96% | 57,377 psi | 88% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,579 psi | 86% | 2825 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 82% | 57,348 psi | 88% | 2648 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,884 psi | 88% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,246 psi | 88% | 2713 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 58,059 psi | 89% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,579 psi | 87% | 2808 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,474 psi | 79% | 2746 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 84% | 55,492 psi | 85% | 2713 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,535 psi | 85% | 2815 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,941 psi | 86% | 2871 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,840 psi | 87% | 2940 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,260 psi | 87% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 58,160 psi | 89% | 2887 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,237 psi | 70% | 2858 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,086 psi | 86% | 2779 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,159 psi | 86% | 2822 fps | 98.6% |
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% | 50,415 psi | 78% | 2615 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,907 psi | 75% | 2631 fps | 98.1% |
| Accurate 3100 | <<locked>> | 86% | 32,663 psi | 50% | 2395 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 47,834 psi | 74% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,506 psi | 56% | 2497 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 98% | 51,663 psi | 79% | 2861 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 53,882 psi | 83% | 2746 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,774 psi | 70% | 2605 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 40,770 psi | 63% | 2595 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 96% | 47,355 psi | 73% | 2749 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,531 psi | 78% | 2815 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,079 psi | 71% | 2628 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,313 psi | 76% | 2697 fps | 100% |
| Alliant Reloder-16 | 46.8 gr | 80% | 35,766 psi | 55% | 2510 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,553 psi | 62% | 2628 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 40,408 psi | 62% | 2589 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 40,524 psi | 62% | 2635 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,904 psi | 40% | 2264 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,502 psi | 48% | 2441 fps | 95.5% |
| Alliant Reloder-26 | 53 gr | 82% | 29,689 psi | 46% | 2431 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,621 psi | 82% | 2766 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 39,929 psi | 61% | 2621 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 46,224 psi | 71% | 2638 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 40,524 psi | 62% | 2635 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 40,770 psi | 63% | 2516 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 80% | 46,630 psi | 72% | 2651 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 38,566 psi | 59% | 2546 fps | 96.5% |
| Hodgdon H4350 | <<locked>> | 80% | 41,698 psi | 64% | 2569 fps | 96% |
| Hodgdon H4831 | <<locked>> | 94% | 47,587 psi | 73% | 2700 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 49,748 psi | 77% | 2740 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 54,476 psi | 84% | 2756 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,272 psi | 51% | 2405 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,068 psi | 79% | 2740 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 39,842 psi | 61% | 2690 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 37,565 psi | 58% | 2552 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 42% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,025 psi | 80% | 2707 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 55,288 psi | 85% | 2730 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,167 psi | 74% | 2638 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,212 psi | 77% | 2664 fps | 98.9% |
| IMR 4350 | <<locked>> | 80% | 36,477 psi | 56% | 2444 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,279 psi | 65% | 2549 fps | 97.4% |
| IMR 4831 | <<locked>> | 80% | 35,215 psi | 54% | 2454 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 50,604 psi | 78% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 46,456 psi | 71% | 2644 fps | 95% |
| IMR 7828 SSC | <<locked>> | 96% | 45,049 psi | 69% | 2720 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 80% | 53,882 psi | 83% | 2717 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,852 psi | 81% | 2674 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,240 psi | 74% | 2635 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,566 psi | 61% | 2497 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 37,913 psi | 58% | 2480 fps | 96.5% |
| Lovex S071 | <<locked>> | 90% | 31,531 psi | 49% | 2369 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 52,330 psi | 81% | 2687 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,214 psi | 82% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,675 psi | 75% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,104 psi | 63% | 2582 fps | 95.3% |
| Norma MRP | <<locked>> | 88% | 37,043 psi | 57% | 2589 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 36,564 psi | 56% | 2497 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 80% | 48,950 psi | 75% | 2703 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 44,947 psi | 69% | 2730 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 35,259 psi | 54% | 2477 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 96% | 39,827 psi | 61% | 2605 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,514 psi | 42% | 1568 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,775 psi | 72% | 2635 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,258 psi | 82% | 2808 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,149 psi | 66% | 2680 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,361 psi | 56% | 2516 fps | 98.1% |
| ReloadSwiss RS 70 | 51.2 gr | 80% | 35,346 psi | 54% | 2523 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 36,782 psi | 57% | 2612 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 50,053 psi | 77% | 2644 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,584 psi | 67% | 2589 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,107 psi | 69% | 2628 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 88% | 39,392 psi | 61% | 2569 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 40,770 psi | 63% | 2516 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,566 psi | 61% | 2497 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,882 psi | 83% | 2717 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,240 psi | 74% | 2635 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,913 psi | 58% | 2480 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,672 psi | 69% | 2638 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 54,853 psi | 84% | 2753 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,141 psi | 80% | 2717 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,490 psi | 82% | 2625 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,150 psi | 69% | 2497 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,798 psi | 60% | 2444 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 39,015 psi | 60% | 2562 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 52,939 psi | 81% | 2621 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 54,491 psi | 84% | 2736 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,816 psi | 67% | 2585 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 49,443 psi | 76% | 2677 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 32,866 psi | 51% | 2451 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 37,246 psi | 57% | 2497 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 54,099 psi | 83% | 2608 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,372 psi | 77% | 2608 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,633 psi | 78% | 2625 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,003 psi | 65% | 2520 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,942 psi | 58% | 2497 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 92% | 39,378 psi | 61% | 2533 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 48,646 psi | 75% | 2615 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,260 psi | 57% | 2493 fps | 98.3% |
| Vihtavuori N555 | <<locked>> | 80% | 28,442 psi | 44% | 2336 fps | 96.3% |
| Vihtavuori N560 | <<locked>> | 94% | 46,079 psi | 71% | 2756 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,014 psi | 57% | 2464 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 38,783 psi | 60% | 2546 fps | 96.6% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,366 psi | 37% | 2290 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,330 psi | 81% | 2726 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,351 psi | 65% | 2595 fps | 95.8% |
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 112 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 160gr | Barnes MRX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,992 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,992 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 53–90 %, 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, Alliant Reloder-16 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 160gr | Barnes MRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.