Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 140gr | Barnes MRX BT bullet and 104 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-17 and ReloadSwiss RS 60.
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 2015 | <<locked>> | 82% | 56,724 psi | 87% | 2848 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,072 psi | 86% | 2877 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,856 psi | 89% | 2949 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 58,465 psi | 90% | 2949 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,210 psi | 73% | 2854 fps | 98.2% |
| Accurate 4064 | <<locked>> | 88% | 56,101 psi | 86% | 2930 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 57,203 psi | 88% | 3035 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 56,231 psi | 87% | 2966 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,334 psi | 88% | 2969 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,071 psi | 85% | 3018 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 58,639 psi | 90% | 2963 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,318 psi | 87% | 2877 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,608 psi | 87% | 3097 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,754 psi | 89% | 2989 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 58,247 psi | 90% | 3015 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,972 psi | 89% | 3091 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,854 psi | 86% | 3071 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,998 psi | 83% | 3005 fps | 97.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,672 psi | 69% | 2884 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,102 psi | 60% | 2779 fps | 96.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,749 psi | 78% | 3068 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,405 psi | 87% | 2986 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 58,639 psi | 90% | 3009 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 58,305 psi | 90% | 2989 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,347 psi | 87% | 2890 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 58,494 psi | 90% | 2995 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,724 psi | 86% | 2972 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 94% | 55,927 psi | 86% | 3031 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 92% | 56,057 psi | 86% | 2992 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 84% | 56,855 psi | 87% | 2976 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 58,204 psi | 90% | 3012 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,884 psi | 88% | 3012 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,405 psi | 87% | 3071 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,737 psi | 55% | 1824 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,986 psi | 89% | 2976 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 57,392 psi | 88% | 2953 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,724 psi | 87% | 2949 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,362 psi | 87% | 2933 fps | 98.8% |
| IMR 4350 | <<locked>> | 96% | 55,332 psi | 85% | 2959 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,724 psi | 87% | 2966 fps | 98.8% |
| IMR 4831 | <<locked>> | 98% | 57,595 psi | 89% | 3025 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 56,057 psi | 86% | 2992 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 58,639 psi | 90% | 2963 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,202 psi | 86% | 2936 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,303 psi | 85% | 2890 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,855 psi | 87% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,159 psi | 86% | 2956 fps | 99.5% |
| Lovex S070 | <<locked>> | 96% | 57,305 psi | 88% | 2995 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,943 psi | 60% | 2694 fps | 96.1% |
| Norma 201 | <<locked>> | 86% | 58,407 psi | 90% | 2959 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,347 psi | 85% | 2904 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,435 psi | 88% | 2999 fps | 100% |
| Norma 204 | <<locked>> | 96% | 56,463 psi | 87% | 3018 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 50,140 psi | 77% | 3018 fps | 97.9% |
| Norma URP | <<locked>> | 96% | 55,825 psi | 86% | 3018 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 58,595 psi | 90% | 3031 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 58,537 psi | 90% | 3074 fps | 99.6% |
| Ramshot TAC | <<locked>> | 82% | 55,259 psi | 85% | 2936 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,143 psi | 85% | 2953 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,289 psi | 56% | 1870 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,927 psi | 86% | 2956 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,332 psi | 85% | 3028 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,361 psi | 85% | 3064 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,869 psi | 87% | 3054 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,144 psi | 86% | 3091 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 58,740 psi | 90% | 2930 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,259 psi | 85% | 2904 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 58,494 psi | 90% | 2999 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,652 psi | 87% | 2986 fps | 96.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,808 psi | 81% | 2986 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 94% | 58,305 psi | 90% | 2989 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,159 psi | 86% | 2956 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,202 psi | 86% | 2936 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,855 psi | 87% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,305 psi | 88% | 2995 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,811 psi | 87% | 3012 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,624 psi | 89% | 2972 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 58,349 psi | 90% | 2989 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,970 psi | 86% | 2841 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,855 psi | 87% | 2841 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,376 psi | 87% | 2910 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,330 psi | 81% | 2979 fps | 97% |
| Somchem S335 | <<locked>> | 84% | 55,535 psi | 85% | 2838 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,421 psi | 88% | 2959 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 58,508 psi | 90% | 2995 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 58,798 psi | 90% | 2979 fps | 95.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 58,653 psi | 90% | 3074 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,417 psi | 82% | 2959 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 84% | 56,391 psi | 87% | 2822 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,608 psi | 86% | 2867 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,072 psi | 86% | 2884 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,478 psi | 87% | 2920 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 58,537 psi | 90% | 3018 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,151 psi | 71% | 2818 fps | 96% |
| Vihtavuori N530 | <<locked>> | 82% | 55,390 psi | 85% | 2910 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,986 psi | 89% | 2930 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,276 psi | 88% | 3018 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,734 psi | 77% | 2959 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 58,595 psi | 90% | 2986 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,927 psi | 86% | 2959 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,217 psi | 86% | 3038 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,059 psi | 62% | 2913 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 58,421 psi | 90% | 2999 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,372 psi | 77% | 2897 fps | 96.2% |
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 2015 | <<locked>> | 80% | 53,171 psi | 82% | 2802 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,818 psi | 70% | 2726 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,911 psi | 83% | 2894 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,889 psi | 69% | 2720 fps | 95.8% |
| Accurate 3100 | <<locked>> | 94% | 38,058 psi | 59% | 2674 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,381 psi | 67% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,430 psi | 50% | 2556 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 49,545 psi | 76% | 2858 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,901 psi | 64% | 2700 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 47,993 psi | 74% | 2894 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,692 psi | 80% | 2861 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,910 psi | 81% | 2835 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,643 psi | 70% | 2907 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,032 psi | 65% | 2726 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,078 psi | 69% | 2795 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,489 psi | 50% | 2575 fps | 95.8% |
| Alliant Reloder-17 | 50.9 gr | 80% | 36,434 psi | 56% | 2703 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,442 psi | 73% | 2884 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,355 psi | 44% | 2480 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,695 psi | 56% | 2720 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,648 psi | 50% | 2657 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,965 psi | 75% | 2864 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 41,829 psi | 64% | 2730 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,308 psi | 65% | 2703 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,982 psi | 82% | 2841 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,966 psi | 78% | 2884 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,482 psi | 65% | 2736 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 39,842 psi | 61% | 2730 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 86% | 46,311 psi | 71% | 2818 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 50,053 psi | 77% | 2867 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,892 psi | 46% | 2470 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,311 psi | 71% | 2841 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 42,192 psi | 65% | 2808 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,774 psi | 41% | 1634 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,877 psi | 74% | 2818 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,140 psi | 77% | 2851 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,048 psi | 68% | 2736 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,456 psi | 71% | 2762 fps | 97% |
| IMR 4350 | <<locked>> | 88% | 42,946 psi | 66% | 2736 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,437 psi | 64% | 2687 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 31,372 psi | 48% | 2513 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 46,209 psi | 71% | 2825 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 51,692 psi | 80% | 2861 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,023 psi | 75% | 2828 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,805 psi | 75% | 2785 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,976 psi | 68% | 2733 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,158 psi | 56% | 2572 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 39,044 psi | 60% | 2657 fps | 95.2% |
| Lovex S071 | <<locked>> | 98% | 36,332 psi | 56% | 2635 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 48,182 psi | 74% | 2802 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,907 psi | 75% | 2805 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,425 psi | 68% | 2782 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 49,139 psi | 76% | 2894 fps | 95.8% |
| Norma MRP | <<locked>> | 94% | 40,596 psi | 62% | 2822 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 32,648 psi | 50% | 2559 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 44,324 psi | 68% | 2799 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 36,347 psi | 56% | 2657 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 51,459 psi | 79% | 2874 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,547 psi | 79% | 2894 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 42% | 1673 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,757 psi | 66% | 2720 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,124 psi | 74% | 2910 fps | 99.7% |
| ReloadSwiss RS 60 | 50.9 gr | 80% | 38,798 psi | 60% | 2769 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,227 psi | 50% | 2572 fps | 95.1% |
| ReloadSwiss RS 70 | 53 gr | 82% | 34,214 psi | 53% | 2638 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 52,040 psi | 80% | 2831 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,788 psi | 70% | 2749 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,204 psi | 60% | 2671 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 98% | 53,069 psi | 82% | 2927 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 96% | 46,122 psi | 71% | 2864 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 84% | 42,308 psi | 65% | 2703 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,158 psi | 56% | 2572 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,023 psi | 75% | 2828 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,976 psi | 68% | 2733 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 39,044 psi | 60% | 2657 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,451 psi | 62% | 2726 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,125 psi | 77% | 2851 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,848 psi | 74% | 2825 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,327 psi | 76% | 2743 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,365 psi | 64% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,466 psi | 62% | 2628 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,672 psi | 70% | 2858 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 49,037 psi | 75% | 2743 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,777 psi | 77% | 2844 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,929 psi | 61% | 2677 fps | 99.3% |
| Somchem S361 | <<locked>> | 98% | 55,216 psi | 85% | 2927 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 29,254 psi | 45% | 2510 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 43,859 psi | 67% | 2789 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 49,864 psi | 77% | 2730 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,774 psi | 70% | 2723 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,224 psi | 71% | 2733 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,029 psi | 59% | 2608 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 34,171 psi | 53% | 2566 fps | 96.1% |
| Vihtavuori N165 | <<locked>> | 98% | 43,178 psi | 66% | 2759 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 51,895 psi | 80% | 2858 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,614 psi | 69% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,562 psi | 52% | 2562 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 30,893 psi | 48% | 2556 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,562 psi | 52% | 2536 fps | 98.2% |
| Winchester 748 | <<locked>> | 80% | 52,127 psi | 80% | 2904 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 40,074 psi | 62% | 2736 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,456 psi | 44% | 2566 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,732 psi | 73% | 2831 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,760 psi | 72% | 2831 fps | 95.3% |
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 118 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 140gr | Barnes MRX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,097 fps; across all powders the maximum-charge window runs from 1,824 fps to 3,097 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 140.0 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 2209 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-17, ReloadSwiss RS 60 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 140gr | Barnes MRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.