Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:140 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:1:10.0
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 140gr | Sierra HPBT GameKing 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% | 56,710 psi | 87% | 2835 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,318 psi | 87% | 2867 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,769 psi | 89% | 2936 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 58,479 psi | 90% | 2933 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,166 psi | 73% | 2841 fps | 98% |
| Accurate 4064 | <<locked>> | 88% | 56,623 psi | 87% | 2920 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,797 psi | 87% | 3018 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 55,970 psi | 86% | 2949 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,130 psi | 88% | 2953 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,650 psi | 84% | 2999 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 84% | 58,291 psi | 90% | 2946 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,449 psi | 87% | 2867 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,101 psi | 86% | 3077 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,389 psi | 84% | 2992 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,580 psi | 89% | 2972 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 58,102 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,609 psi | 89% | 3074 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,201 psi | 85% | 3051 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,577 psi | 82% | 2982 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,411 psi | 68% | 2864 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,117 psi | 60% | 2766 fps | 96.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,357 psi | 77% | 3048 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,941 psi | 86% | 2966 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 58,740 psi | 90% | 2995 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 58,030 psi | 89% | 2969 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,246 psi | 87% | 2874 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 58,450 psi | 90% | 2982 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,448 psi | 85% | 2956 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 55,680 psi | 86% | 3015 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 92% | 55,724 psi | 86% | 2972 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 84% | 56,594 psi | 87% | 2959 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,899 psi | 89% | 2995 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,666 psi | 87% | 2995 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,101 psi | 86% | 3054 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 55% | 1814 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,667 psi | 89% | 2959 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,898 psi | 88% | 2936 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,768 psi | 87% | 2936 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,188 psi | 86% | 2917 fps | 98.6% |
| IMR 4350 | <<locked>> | 98% | 58,682 psi | 90% | 2999 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,333 psi | 87% | 2946 fps | 98.6% |
| IMR 4831 | <<locked>> | 98% | 57,130 psi | 88% | 3005 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,898 psi | 86% | 2976 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 58,291 psi | 90% | 2946 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,144 psi | 86% | 2923 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 58,523 psi | 90% | 2923 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,753 psi | 87% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,956 psi | 86% | 2940 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 57,174 psi | 88% | 2979 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,160 psi | 60% | 2684 fps | 96% |
| Norma 201 | <<locked>> | 86% | 58,305 psi | 90% | 2943 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,376 psi | 85% | 2890 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,276 psi | 88% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,956 psi | 86% | 2995 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 49,951 psi | 77% | 3002 fps | 97.7% |
| Norma URP | <<locked>> | 96% | 55,535 psi | 85% | 3002 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 58,189 psi | 90% | 3012 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 58,073 psi | 89% | 3058 fps | 99.5% |
| Ramshot TAC | <<locked>> | 84% | 58,624 psi | 90% | 2972 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 58,566 psi | 90% | 2989 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,448 psi | 56% | 1857 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,651 psi | 86% | 2936 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,056 psi | 85% | 3012 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 58,813 psi | 90% | 3104 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,492 psi | 87% | 3041 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,477 psi | 85% | 3068 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 55,637 psi | 86% | 2871 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,798 psi | 90% | 2940 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 58,610 psi | 90% | 2986 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,492 psi | 87% | 2969 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,431 psi | 81% | 2966 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 94% | 58,030 psi | 89% | 2969 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,956 psi | 86% | 2940 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,144 psi | 86% | 2923 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,753 psi | 87% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,174 psi | 88% | 2979 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,463 psi | 87% | 2995 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,305 psi | 88% | 2953 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 58,204 psi | 90% | 2976 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,869 psi | 86% | 2825 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,579 psi | 87% | 2828 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,246 psi | 87% | 2894 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,938 psi | 80% | 2959 fps | 96.7% |
| Somchem S335 | <<locked>> | 84% | 55,347 psi | 85% | 2822 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,014 psi | 88% | 2940 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 58,523 psi | 90% | 2982 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 58,044 psi | 89% | 3058 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,229 psi | 82% | 2943 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 84% | 56,260 psi | 87% | 2808 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,317 psi | 85% | 2851 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,115 psi | 86% | 2871 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,449 psi | 87% | 2907 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,943 psi | 89% | 2995 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 55,390 psi | 85% | 2897 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,624 psi | 89% | 2913 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,159 psi | 88% | 3005 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,443 psi | 76% | 2943 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,928 psi | 89% | 2969 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,666 psi | 86% | 2946 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,970 psi | 86% | 3022 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,914 psi | 61% | 2894 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 58,320 psi | 90% | 2982 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,850 psi | 77% | 2874 fps | 95.9% |
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% | 53,432 psi | 82% | 2792 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,325 psi | 71% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,853 psi | 83% | 2881 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,875 psi | 69% | 2703 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 38,290 psi | 59% | 2664 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 43,816 psi | 67% | 2723 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,793 psi | 50% | 2556 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 49,530 psi | 76% | 2844 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,076 psi | 65% | 2690 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 47,863 psi | 74% | 2877 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,634 psi | 79% | 2848 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,721 psi | 81% | 2818 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,440 psi | 70% | 2890 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 47,703 psi | 73% | 2874 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,105 psi | 65% | 2713 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,136 psi | 69% | 2782 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,605 psi | 50% | 2562 fps | 95.6% |
| Alliant Reloder-17 | 49.7 gr | 80% | 36,622 psi | 56% | 2697 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,065 psi | 72% | 2864 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,616 psi | 44% | 2474 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,666 psi | 56% | 2703 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,288 psi | 54% | 2720 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,052 psi | 75% | 2854 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 42,119 psi | 65% | 2723 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,540 psi | 65% | 2694 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,866 psi | 81% | 2825 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,865 psi | 78% | 2871 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,670 psi | 66% | 2726 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 39,842 psi | 61% | 2717 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 86% | 46,238 psi | 71% | 2805 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 50,082 psi | 77% | 2858 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,095 psi | 46% | 2464 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,354 psi | 71% | 2831 fps | 100% |
| Hodgdon Superformance | 56.4 gr | 86% | 41,974 psi | 65% | 2792 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,919 psi | 41% | 1624 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,776 psi | 74% | 2802 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 50,241 psi | 77% | 2841 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,208 psi | 68% | 2726 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,470 psi | 71% | 2746 fps | 96.8% |
| IMR 4350 | <<locked>> | 88% | 42,946 psi | 66% | 2723 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,510 psi | 64% | 2674 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 31,633 psi | 49% | 2507 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 46,296 psi | 71% | 2815 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 51,634 psi | 79% | 2848 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,197 psi | 76% | 2818 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,965 psi | 75% | 2772 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,324 psi | 68% | 2726 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,390 psi | 56% | 2566 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 39,378 psi | 61% | 2651 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 36,753 psi | 57% | 2631 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 48,312 psi | 74% | 2789 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,892 psi | 75% | 2792 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,527 psi | 69% | 2772 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 48,689 psi | 75% | 2874 fps | 95.5% |
| Norma MRP | <<locked>> | 94% | 40,698 psi | 63% | 2815 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,793 psi | 50% | 2552 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 44,222 psi | 68% | 2782 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 39,102 psi | 60% | 2710 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 51,576 psi | 79% | 2861 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,329 psi | 79% | 2881 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,311 psi | 42% | 1663 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,946 psi | 66% | 2710 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,109 psi | 74% | 2897 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,957 psi | 60% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,387 psi | 50% | 2566 fps | 95% |
| ReloadSwiss RS 70 | 51.7 gr | 82% | 34,360 psi | 53% | 2628 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 52,518 psi | 81% | 2825 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,180 psi | 71% | 2743 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,465 psi | 61% | 2664 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 98% | 52,910 psi | 81% | 2913 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 96% | 45,992 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% | 36,390 psi | 56% | 2566 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,197 psi | 76% | 2818 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,324 psi | 68% | 2726 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 39,378 psi | 61% | 2651 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,553 psi | 62% | 2717 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,096 psi | 77% | 2838 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,921 psi | 74% | 2812 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,501 psi | 76% | 2733 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,524 psi | 64% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,524 psi | 62% | 2615 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,542 psi | 70% | 2841 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 49,081 psi | 76% | 2730 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,908 psi | 77% | 2831 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,103 psi | 62% | 2667 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 29,530 psi | 45% | 2507 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 43,642 psi | 67% | 2772 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 49,937 psi | 77% | 2720 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,992 psi | 71% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,209 psi | 71% | 2723 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,174 psi | 59% | 2598 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 34,360 psi | 53% | 2559 fps | 96% |
| Vihtavuori N530 | <<locked>> | 80% | 51,851 psi | 80% | 2844 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,715 psi | 69% | 2717 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,837 psi | 52% | 2556 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 31,111 psi | 48% | 2552 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,852 psi | 52% | 2533 fps | 98.1% |
| Winchester 748 | <<locked>> | 80% | 52,098 psi | 80% | 2894 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 40,059 psi | 62% | 2723 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,747 psi | 44% | 2559 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,601 psi | 73% | 2815 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,514 psi | 72% | 2815 fps | 95% |
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 103 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 140gr | Sierra HPBT GameKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,104 fps; across all powders the maximum-charge window runs from 1,814 fps to 3,104 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 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 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 .284 | 140gr | Sierra HPBT 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.