Load Specifications
Bullet:.284 | 143gr | Hammer Hunter
Bullet Manufacturer:Hammer
Bullet Weight:143 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:1:9.5
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 143gr | Hammer Hunter 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, 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% | 56,550 psi | 87% | 2799 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,014 psi | 86% | 2828 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,276 psi | 88% | 2890 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,885 psi | 89% | 2887 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,818 psi | 72% | 2802 fps | 98% |
| Accurate 4064 | <<locked>> | 88% | 56,072 psi | 86% | 2877 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,231 psi | 87% | 2976 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 55,724 psi | 86% | 2910 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,666 psi | 87% | 2910 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,012 psi | 83% | 2953 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 58,015 psi | 89% | 2907 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,956 psi | 86% | 2825 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,767 psi | 86% | 3035 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,159 psi | 88% | 2933 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,609 psi | 89% | 2956 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,043 psi | 88% | 3031 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,737 psi | 84% | 3009 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,258 psi | 82% | 2943 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,034 psi | 68% | 2828 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,624 psi | 59% | 2723 fps | 96.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,893 psi | 77% | 3009 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,593 psi | 86% | 2923 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 58,030 psi | 89% | 2949 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,754 psi | 89% | 2930 fps | 98.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,927 psi | 86% | 2835 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 58,030 psi | 89% | 2940 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,056 psi | 85% | 2913 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 55,172 psi | 85% | 2972 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 92% | 55,448 psi | 85% | 2933 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 84% | 56,304 psi | 87% | 2920 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,377 psi | 88% | 2953 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,318 psi | 87% | 2956 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,564 psi | 85% | 3012 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,940 psi | 55% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,435 psi | 88% | 2920 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,811 psi | 87% | 2897 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,202 psi | 86% | 2894 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,738 psi | 86% | 2874 fps | 98.6% |
| IMR 4350 | <<locked>> | 98% | 58,334 psi | 90% | 2956 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,999 psi | 86% | 2904 fps | 98.6% |
| IMR 4831 | <<locked>> | 98% | 56,652 psi | 87% | 2963 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,680 psi | 86% | 2936 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 58,015 psi | 89% | 2907 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,912 psi | 86% | 2884 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 58,276 psi | 90% | 2884 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,246 psi | 87% | 2887 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,680 psi | 86% | 2897 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 56,681 psi | 87% | 2936 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,725 psi | 60% | 2648 fps | 96% |
| Norma 201 | <<locked>> | 86% | 58,001 psi | 89% | 2904 fps | 100% |
| Norma 202 | <<locked>> | 86% | 58,494 psi | 90% | 2897 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,840 psi | 87% | 2943 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,550 psi | 85% | 2956 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 49,487 psi | 76% | 2963 fps | 97.7% |
| Norma URP | <<locked>> | 96% | 55,013 psi | 85% | 2959 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 57,609 psi | 89% | 2969 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,769 psi | 89% | 3018 fps | 99.5% |
| Ramshot TAC | <<locked>> | 84% | 58,305 psi | 90% | 2933 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 58,175 psi | 89% | 2946 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 58,639 psi | 90% | 2907 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,564 psi | 56% | 1831 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,376 psi | 85% | 2897 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 58,740 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 58,262 psi | 90% | 3058 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,101 psi | 86% | 2999 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,172 psi | 85% | 3028 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 55,463 psi | 85% | 2831 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,566 psi | 90% | 2900 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 58,175 psi | 89% | 2946 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,796 psi | 86% | 2923 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,011 psi | 80% | 2923 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 94% | 57,754 psi | 89% | 2930 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,680 psi | 86% | 2897 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,912 psi | 86% | 2884 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,246 psi | 87% | 2887 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,681 psi | 87% | 2936 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,188 psi | 86% | 2953 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,942 psi | 88% | 2910 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,769 psi | 89% | 2933 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,738 psi | 86% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,014 psi | 86% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,695 psi | 86% | 2851 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,517 psi | 79% | 2917 fps | 96.7% |
| Somchem S335 | <<locked>> | 86% | 58,639 psi | 90% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,666 psi | 87% | 2900 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 58,131 psi | 89% | 2940 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,246 psi | 88% | 3012 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,881 psi | 81% | 2904 fps | 97.8% |
| Vihtavuori N130 | <<locked>> | 82% | 58,740 psi | 90% | 2789 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 56,130 psi | 86% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 58,769 psi | 90% | 2861 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,579 psi | 86% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,115 psi | 86% | 2867 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,392 psi | 88% | 2953 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 58,537 psi | 90% | 2904 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,246 psi | 88% | 2874 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,753 psi | 87% | 2963 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,994 psi | 75% | 2904 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,696 psi | 89% | 2930 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,405 psi | 85% | 2904 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,521 psi | 85% | 2976 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,479 psi | 61% | 2854 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,972 psi | 89% | 2943 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,617 psi | 76% | 2838 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% | 53,200 psi | 82% | 2753 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,122 psi | 71% | 2687 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,548 psi | 82% | 2841 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,599 psi | 69% | 2664 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 38,058 psi | 59% | 2631 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,627 psi | 67% | 2684 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,489 psi | 50% | 2516 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 49,168 psi | 76% | 2805 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,698 psi | 64% | 2651 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 47,427 psi | 73% | 2835 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,213 psi | 79% | 2805 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,475 psi | 81% | 2779 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,194 psi | 70% | 2851 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,713 psi | 64% | 2674 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,802 psi | 69% | 2743 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,489 psi | 50% | 2530 fps | 95.7% |
| Alliant Reloder-17 | 48.6 gr | 80% | 36,390 psi | 56% | 2661 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,688 psi | 72% | 2825 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,456 psi | 44% | 2441 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,390 psi | 56% | 2664 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,940 psi | 54% | 2680 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,631 psi | 75% | 2812 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 41,771 psi | 64% | 2684 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,279 psi | 65% | 2654 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,721 psi | 81% | 2789 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,604 psi | 78% | 2831 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,351 psi | 65% | 2687 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 39,668 psi | 61% | 2684 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 86% | 45,818 psi | 70% | 2762 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 49,690 psi | 76% | 2812 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,950 psi | 46% | 2431 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,093 psi | 71% | 2792 fps | 100% |
| Hodgdon Superformance | 55.2 gr | 86% | 41,800 psi | 64% | 2756 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 41% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,413 psi | 73% | 2759 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 49,777 psi | 77% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,830 psi | 67% | 2684 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,137 psi | 71% | 2707 fps | 96.9% |
| IMR 4350 | <<locked>> | 88% | 42,569 psi | 65% | 2684 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,234 psi | 63% | 2635 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 31,517 psi | 48% | 2477 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 45,905 psi | 71% | 2772 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 51,213 psi | 79% | 2805 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,921 psi | 75% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,515 psi | 75% | 2730 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,903 psi | 68% | 2687 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,245 psi | 56% | 2530 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 39,102 psi | 60% | 2615 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 36,303 psi | 56% | 2592 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 48,167 psi | 74% | 2753 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,486 psi | 75% | 2753 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,150 psi | 68% | 2730 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 48,486 psi | 75% | 2835 fps | 95.5% |
| Norma MRP | <<locked>> | 94% | 40,379 psi | 62% | 2772 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,663 psi | 50% | 2520 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 43,976 psi | 68% | 2746 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 38,754 psi | 60% | 2671 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 51,140 psi | 79% | 2822 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,140 psi | 79% | 2841 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 55,071 psi | 85% | 2854 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,224 psi | 42% | 1637 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,714 psi | 66% | 2674 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,776 psi | 74% | 2854 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,740 psi | 60% | 2723 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,140 psi | 49% | 2530 fps | 95.1% |
| ReloadSwiss RS 70 | 50.5 gr | 82% | 34,084 psi | 52% | 2589 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 52,257 psi | 80% | 2785 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,730 psi | 70% | 2700 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,320 psi | 60% | 2628 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 98% | 52,475 psi | 81% | 2867 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 96% | 45,542 psi | 70% | 2808 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 42,279 psi | 65% | 2654 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,245 psi | 56% | 2530 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,921 psi | 75% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,903 psi | 68% | 2687 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 39,102 psi | 60% | 2615 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,277 psi | 62% | 2680 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,922 psi | 77% | 2799 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,645 psi | 73% | 2772 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,226 psi | 76% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,307 psi | 64% | 2559 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,350 psi | 62% | 2579 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,107 psi | 69% | 2802 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 48,907 psi | 75% | 2694 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,472 psi | 76% | 2789 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 39,929 psi | 61% | 2631 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 29,269 psi | 45% | 2470 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 43,439 psi | 67% | 2736 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 55,332 psi | 85% | 2743 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 49,690 psi | 76% | 2680 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,759 psi | 70% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,093 psi | 71% | 2687 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,043 psi | 59% | 2566 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 34,026 psi | 52% | 2520 fps | 96% |
| Vihtavuori N530 | <<locked>> | 80% | 51,532 psi | 79% | 2802 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,454 psi | 68% | 2677 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,562 psi | 52% | 2520 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 30,864 psi | 47% | 2520 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,533 psi | 52% | 2493 fps | 98.1% |
| Winchester 748 | <<locked>> | 80% | 51,837 psi | 80% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 39,668 psi | 61% | 2684 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,587 psi | 44% | 2526 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,326 psi | 73% | 2779 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,224 psi | 71% | 2779 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 104 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 143gr | Hammer Hunter. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,058 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,058 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 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 143.0 gr projectile in 0.284" calls for a 1:9.5 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 | 143gr | Hammer Hunter 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.