Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .283 | 140gr | Rhino Penetrator bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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 2015 | <<locked>> | 82% | 57,072 psi | 88% | 2841 fps | 100% |
| Accurate 2495 | <<locked>> | 82% | 55,448 psi | 85% | 2881 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,173 psi | 86% | 2923 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,898 psi | 86% | 2884 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,471 psi | 73% | 2844 fps | 98.1% |
| Accurate 4064 | <<locked>> | 88% | 56,652 psi | 87% | 2920 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 57,130 psi | 88% | 3022 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 56,275 psi | 87% | 2956 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,406 psi | 88% | 2956 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,636 psi | 84% | 2999 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 84% | 58,639 psi | 90% | 2953 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,463 psi | 87% | 2867 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,405 psi | 87% | 3084 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,914 psi | 89% | 2979 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 58,117 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,899 psi | 89% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,535 psi | 85% | 3054 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,867 psi | 83% | 2989 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,686 psi | 69% | 2871 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,102 psi | 60% | 2766 fps | 96.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,662 psi | 78% | 3054 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,275 psi | 87% | 2972 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 58,711 psi | 90% | 2995 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 58,363 psi | 90% | 2972 fps | 98.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,304 psi | 87% | 2877 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 58,436 psi | 90% | 2982 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 58,378 psi | 90% | 2923 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,724 psi | 86% | 2959 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 57,479 psi | 88% | 3045 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 96% | 57,493 psi | 88% | 3002 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 84% | 56,927 psi | 88% | 2963 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,856 psi | 89% | 2995 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,724 psi | 87% | 2995 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,376 psi | 87% | 3058 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,955 psi | 55% | 1818 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 56,768 psi | 87% | 2946 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,680 psi | 86% | 2920 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,173 psi | 86% | 2930 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 58,595 psi | 90% | 2953 fps | 98.9% |
| IMR 4350 | <<locked>> | 96% | 55,390 psi | 85% | 2949 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,579 psi | 87% | 2949 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,360 psi | 84% | 2966 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 55,912 psi | 86% | 2976 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 58,639 psi | 90% | 2953 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,463 psi | 87% | 2927 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,259 psi | 85% | 2877 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,753 psi | 87% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,275 psi | 87% | 2943 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 57,493 psi | 88% | 2986 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,175 psi | 60% | 2684 fps | 96% |
| Norma 201 | <<locked>> | 86% | 58,305 psi | 90% | 2943 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,390 psi | 85% | 2890 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,334 psi | 88% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,898 psi | 86% | 2995 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 49,937 psi | 77% | 3005 fps | 97.7% |
| Norma URP | <<locked>> | 96% | 55,883 psi | 86% | 3005 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 58,189 psi | 90% | 3012 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 58,378 psi | 90% | 3061 fps | 99.5% |
| Ramshot TAC | <<locked>> | 82% | 55,143 psi | 85% | 2920 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,013 psi | 85% | 2936 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,564 psi | 56% | 1860 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,622 psi | 86% | 2936 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,405 psi | 85% | 3018 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,984 psi | 85% | 3051 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,782 psi | 87% | 3045 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,753 psi | 86% | 3074 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 55,666 psi | 86% | 2871 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,477 psi | 85% | 2894 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 58,566 psi | 90% | 2989 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,449 psi | 87% | 2969 fps | 96.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,707 psi | 81% | 2969 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 94% | 58,363 psi | 90% | 2972 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,275 psi | 87% | 2943 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,463 psi | 87% | 2927 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,753 psi | 87% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,493 psi | 88% | 2986 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,724 psi | 87% | 2999 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,595 psi | 89% | 2959 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 58,189 psi | 90% | 2976 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,188 psi | 86% | 2831 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,594 psi | 87% | 2828 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,260 psi | 87% | 2894 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,214 psi | 80% | 2963 fps | 96.8% |
| Somchem S335 | <<locked>> | 84% | 55,651 psi | 86% | 2825 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,348 psi | 88% | 2946 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 58,566 psi | 90% | 2982 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 58,059 psi | 89% | 3058 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,519 psi | 82% | 2946 fps | 97.8% |
| Unknown powder | <<locked>> | 94% | 56,652 psi | 87% | 3012 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 82% | 57,928 psi | 89% | 2818 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,811 psi | 86% | 2805 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,695 psi | 86% | 2858 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,201 psi | 85% | 2861 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,637 psi | 87% | 2913 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,087 psi | 88% | 2982 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 58,059 psi | 89% | 2953 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 58,610 psi | 90% | 2940 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,493 psi | 88% | 3031 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,719 psi | 77% | 2949 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 58,204 psi | 90% | 2972 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,479 psi | 88% | 3045 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,103 psi | 62% | 2900 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,999 psi | 86% | 2972 fps | 97.2% |
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% | 53,476 psi | 82% | 2792 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 52,098 psi | 80% | 2835 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,649 psi | 81% | 2871 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,178 psi | 66% | 2661 fps | 95.1% |
| Accurate 3100 | <<locked>> | 94% | 38,537 psi | 59% | 2671 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 44,135 psi | 68% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,851 psi | 51% | 2556 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 49,588 psi | 76% | 2844 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,134 psi | 65% | 2694 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 48,109 psi | 74% | 2881 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,634 psi | 79% | 2848 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,750 psi | 81% | 2818 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,701 psi | 70% | 2894 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,163 psi | 65% | 2717 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,194 psi | 70% | 2785 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,648 psi | 50% | 2566 fps | 95.7% |
| Alliant Reloder-17 | 49.8 gr | 80% | 36,666 psi | 56% | 2697 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,340 psi | 73% | 2871 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,645 psi | 44% | 2474 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,854 psi | 57% | 2710 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,040 psi | 51% | 2657 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,066 psi | 76% | 2854 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 42,148 psi | 65% | 2723 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,540 psi | 65% | 2694 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,171 psi | 82% | 2831 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,184 psi | 79% | 2874 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 54,926 psi | 85% | 2877 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,714 psi | 66% | 2730 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 82% | 40,756 psi | 63% | 2740 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 88% | 45,020 psi | 69% | 2779 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 50,111 psi | 77% | 2858 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,124 psi | 46% | 2464 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,383 psi | 71% | 2831 fps | 100% |
| Hodgdon Superformance | 56.6 gr | 86% | 42,192 psi | 65% | 2795 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,832 psi | 41% | 1624 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,353 psi | 68% | 2740 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 46,151 psi | 71% | 2776 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,437 psi | 64% | 2671 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,930 psi | 63% | 2635 fps | 95.3% |
| IMR 4350 | <<locked>> | 88% | 43,178 psi | 66% | 2730 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,539 psi | 64% | 2674 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 32,793 psi | 50% | 2539 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 46,325 psi | 71% | 2815 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 51,634 psi | 79% | 2848 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,269 psi | 76% | 2822 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,979 psi | 75% | 2772 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,382 psi | 68% | 2730 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,622 psi | 56% | 2569 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 39,392 psi | 61% | 2651 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 36,767 psi | 57% | 2631 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 48,646 psi | 75% | 2795 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,950 psi | 75% | 2792 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,556 psi | 69% | 2772 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 48,979 psi | 75% | 2877 fps | 95.6% |
| Norma MRP | <<locked>> | 94% | 40,712 psi | 63% | 2812 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 33,054 psi | 51% | 2556 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 44,483 psi | 68% | 2789 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 39,117 psi | 60% | 2710 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 51,605 psi | 79% | 2864 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,372 psi | 79% | 2877 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,224 psi | 42% | 1663 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,989 psi | 66% | 2713 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,138 psi | 74% | 2897 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,972 psi | 60% | 2762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,590 psi | 50% | 2569 fps | 95.1% |
| ReloadSwiss RS 70 | 51.8 gr | 82% | 34,403 psi | 53% | 2628 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 52,533 psi | 81% | 2825 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,253 psi | 71% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,769 psi | 61% | 2667 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 98% | 52,852 psi | 81% | 2910 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 96% | 45,977 psi | 71% | 2848 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 84% | 42,540 psi | 65% | 2694 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,622 psi | 56% | 2569 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,269 psi | 76% | 2822 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,382 psi | 68% | 2730 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 39,392 psi | 61% | 2651 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,611 psi | 63% | 2717 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,125 psi | 77% | 2838 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,935 psi | 74% | 2812 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,516 psi | 76% | 2733 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,553 psi | 64% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,799 psi | 63% | 2621 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,571 psi | 70% | 2841 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 49,356 psi | 76% | 2733 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,937 psi | 77% | 2831 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,350 psi | 62% | 2671 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 29,559 psi | 45% | 2507 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 43,932 psi | 68% | 2779 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 35,737 psi | 55% | 2615 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 54,621 psi | 84% | 2772 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,934 psi | 72% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,050 psi | 71% | 2717 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,934 psi | 71% | 2720 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,447 psi | 53% | 2516 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 80% | 35,810 psi | 55% | 2592 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 80% | 54,360 psi | 84% | 2897 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,469 psi | 70% | 2740 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,260 psi | 56% | 2631 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 86% | 31,125 psi | 48% | 2552 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,895 psi | 52% | 2533 fps | 98.1% |
| Winchester 760 | <<locked>> | 82% | 40,756 psi | 63% | 2740 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,906 psi | 44% | 2566 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,443 psi | 75% | 2851 fps | 95.6% |
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 .283 | 140gr | Rhino Penetrator. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,084 fps; across all powders the maximum-charge window runs from 1,818 fps to 3,084 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 0.283" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .283 | 140gr | Rhino Penetrator they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Bofors RP15, Hodgdon H4831 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.