Load Specifications
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 133gr | MRR Green Hunting bullet and 100 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.
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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% | 56,144 psi | 86% | 2907 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,680 psi | 86% | 2940 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,014 psi | 88% | 3005 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,841 psi | 89% | 2999 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,688 psi | 72% | 2900 fps | 97.6% |
| Accurate 4064 | <<locked>> | 88% | 55,898 psi | 86% | 2992 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,115 psi | 86% | 3084 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 55,419 psi | 85% | 3022 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,710 psi | 87% | 3022 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,896 psi | 83% | 3058 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,711 psi | 89% | 3018 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,695 psi | 86% | 2940 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,361 psi | 85% | 3146 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,101 psi | 88% | 3045 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,609 psi | 89% | 3074 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,956 psi | 88% | 3143 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 58,581 psi | 90% | 3182 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,127 psi | 82% | 3048 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,845 psi | 67% | 2927 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,792 psi | 77% | 3114 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,361 psi | 85% | 3035 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 58,030 psi | 89% | 3064 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,392 psi | 88% | 3035 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,622 psi | 86% | 2946 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,899 psi | 89% | 3054 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 58,784 psi | 90% | 3084 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 96% | 58,653 psi | 90% | 3136 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 92% | 55,303 psi | 85% | 3038 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 84% | 55,999 psi | 86% | 3028 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,174 psi | 88% | 3064 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,057 psi | 86% | 3068 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,361 psi | 85% | 3117 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,868 psi | 55% | 1873 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,319 psi | 88% | 3031 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,434 psi | 87% | 3012 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,115 psi | 86% | 3005 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,535 psi | 85% | 2982 fps | 98.2% |
| IMR 4350 | <<locked>> | 98% | 58,088 psi | 89% | 3064 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,753 psi | 86% | 3012 fps | 98.2% |
| IMR 4831 | <<locked>> | 98% | 56,391 psi | 87% | 3074 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 55,216 psi | 85% | 3045 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,711 psi | 89% | 3018 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,695 psi | 86% | 2995 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 58,030 psi | 89% | 2995 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,072 psi | 86% | 2999 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,593 psi | 86% | 3009 fps | 99.2% |
| Lovex S070 | <<locked>> | 96% | 56,681 psi | 87% | 3048 fps | 98.6% |
| Norma 201 | <<locked>> | 86% | 57,740 psi | 89% | 3015 fps | 100% |
| Norma 202 | <<locked>> | 86% | 58,450 psi | 90% | 3015 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,797 psi | 87% | 3058 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,187 psi | 85% | 3058 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 49,255 psi | 76% | 3061 fps | 97.2% |
| Norma URP | <<locked>> | 98% | 58,653 psi | 90% | 3127 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 57,421 psi | 88% | 3081 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,508 psi | 88% | 3123 fps | 99.2% |
| Ramshot TAC | <<locked>> | 84% | 58,088 psi | 89% | 3045 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 58,015 psi | 89% | 3061 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 58,668 psi | 90% | 3022 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,434 psi | 56% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 58,798 psi | 90% | 3061 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 58,262 psi | 90% | 3140 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 58,117 psi | 89% | 3176 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,869 psi | 86% | 3107 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,868 psi | 84% | 3136 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 58,624 psi | 90% | 2995 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,175 psi | 89% | 3012 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,885 psi | 89% | 3058 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,924 psi | 80% | 3028 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 94% | 57,392 psi | 88% | 3035 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,593 psi | 86% | 3009 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,695 psi | 86% | 2995 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,072 psi | 86% | 2999 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,681 psi | 87% | 3048 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,970 psi | 86% | 3068 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,739 psi | 87% | 3022 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,406 psi | 88% | 3041 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,245 psi | 85% | 2894 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,985 psi | 86% | 2897 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,477 psi | 85% | 2956 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,430 psi | 79% | 3022 fps | 96.2% |
| Somchem S335 | <<locked>> | 86% | 58,349 psi | 90% | 2940 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,420 psi | 87% | 3009 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,928 psi | 89% | 3051 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,159 psi | 88% | 3127 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,678 psi | 81% | 3005 fps | 97.3% |
| Vihtavuori N130 | <<locked>> | 82% | 58,407 psi | 90% | 2900 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 55,637 psi | 86% | 2877 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 58,175 psi | 89% | 2969 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,477 psi | 85% | 2940 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,796 psi | 86% | 2976 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,319 psi | 88% | 3064 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 84% | 58,479 psi | 90% | 3018 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,087 psi | 88% | 2986 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,420 psi | 87% | 3071 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,979 psi | 75% | 3012 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,595 psi | 89% | 3038 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,940 psi | 85% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,317 psi | 85% | 3084 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,378 psi | 61% | 2946 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,682 psi | 89% | 3051 fps | 100% |
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% | 52,968 psi | 81% | 2864 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,745 psi | 70% | 2789 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,243 psi | 82% | 2949 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,396 psi | 68% | 2762 fps | 95% |
| Accurate 3100 | <<locked>> | 94% | 37,826 psi | 58% | 2720 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 43,265 psi | 67% | 2785 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 34,577 psi | 53% | 2664 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 48,936 psi | 75% | 2910 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 41,655 psi | 64% | 2753 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 98% | 50,546 psi | 78% | 2999 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,995 psi | 78% | 2913 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,083 psi | 80% | 2890 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,107 psi | 69% | 2956 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,568 psi | 64% | 2776 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,570 psi | 69% | 2844 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 82% | 34,345 psi | 53% | 2677 fps | 95.9% |
| Alliant Reloder-17 | 51.1 gr | 80% | 36,172 psi | 56% | 2753 fps | 98.2% |
| Alliant Reloder-19 | <<locked>> | 98% | 49,588 psi | 76% | 2982 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,081 psi | 46% | 2579 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,809 psi | 54% | 2769 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,443 psi | 75% | 2917 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 41,510 psi | 64% | 2782 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 44,889 psi | 69% | 2808 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,344 psi | 81% | 2894 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,546 psi | 78% | 2943 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,032 psi | 65% | 2785 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 42,119 psi | 65% | 2838 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 88% | 48,544 psi | 75% | 2920 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 49,429 psi | 76% | 2920 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,689 psi | 46% | 2513 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,832 psi | 71% | 2894 fps | 99.9% |
| Hodgdon Superformance | 59.4 gr | 88% | 44,686 psi | 69% | 2917 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,745 psi | 41% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,239 psi | 73% | 2867 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 49,414 psi | 76% | 2907 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,758 psi | 67% | 2789 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,137 psi | 71% | 2812 fps | 96.4% |
| IMR 4350 | <<locked>> | 90% | 45,310 psi | 70% | 2841 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,584 psi | 67% | 2785 fps | 95.6% |
| IMR 4831 | <<locked>> | 82% | 33,475 psi | 51% | 2621 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 45,658 psi | 70% | 2877 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 50,995 psi | 78% | 2913 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,704 psi | 75% | 2887 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,472 psi | 75% | 2838 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 43,816 psi | 67% | 2792 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 38,305 psi | 59% | 2674 fps | 95.6% |
| Lovex S070 | <<locked>> | 86% | 41,452 psi | 64% | 2766 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 47,805 psi | 74% | 2854 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,327 psi | 74% | 2861 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,932 psi | 68% | 2831 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 51,735 psi | 80% | 2999 fps | 95.8% |
| Norma MRP | <<locked>> | 96% | 43,076 psi | 66% | 2933 fps | 95.4% |
| Norma URP | <<locked>> | 82% | 34,780 psi | 54% | 2667 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 43,845 psi | 67% | 2848 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 38,464 psi | 59% | 2762 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 51,010 psi | 78% | 2927 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,778 psi | 78% | 2946 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 54,998 psi | 85% | 2966 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 42% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,264 psi | 65% | 2766 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,529 psi | 73% | 2963 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,493 psi | 59% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,287 psi | 53% | 2680 fps | 95.3% |
| ReloadSwiss RS 70 | 54.5 gr | 84% | 36,463 psi | 56% | 2749 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 51,793 psi | 80% | 2890 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,513 psi | 70% | 2805 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,146 psi | 60% | 2726 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 48,602 psi | 75% | 2966 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 86% | 44,889 psi | 69% | 2808 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,305 psi | 59% | 2674 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,704 psi | 75% | 2887 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,816 psi | 67% | 2792 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 41,452 psi | 64% | 2766 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,118 psi | 62% | 2779 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,516 psi | 76% | 2900 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,456 psi | 73% | 2877 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,820 psi | 75% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,930 psi | 63% | 2657 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,743 psi | 66% | 2726 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 48,138 psi | 74% | 2963 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 48,588 psi | 75% | 2795 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,298 psi | 76% | 2897 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 39,624 psi | 61% | 2726 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 29,080 psi | 45% | 2552 fps | 97.1% |
| Somchem S385 | <<locked>> | 96% | 46,296 psi | 71% | 2890 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 54,853 psi | 84% | 2854 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 49,255 psi | 76% | 2785 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,295 psi | 70% | 2779 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,934 psi | 71% | 2792 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,898 psi | 58% | 2661 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 33,823 psi | 52% | 2608 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 51,198 psi | 79% | 2910 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,106 psi | 68% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,679 psi | 55% | 2667 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 88% | 32,735 psi | 50% | 2661 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,431 psi | 51% | 2582 fps | 97.6% |
| Winchester 748 | <<locked>> | 80% | 51,547 psi | 79% | 2963 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 42,366 psi | 65% | 2841 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,471 psi | 44% | 2605 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,065 psi | 72% | 2881 fps | 99.8% |
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 100 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 133gr | MRR Green Hunting. Alliant Reloder-17 delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,182 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 133.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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 | 133gr | MRR Green Hunting 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.