Load Specifications
Bullet:.284 | 156gr | Norma ORYX
Bullet Manufacturer:Norma
Bullet Weight:156 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:1:13.5
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 156gr | Norma ORYX bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Hodgdon Superformance.
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 2495 | <<locked>> | 82% | 55,796 psi | 86% | 2717 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,956 psi | 88% | 2792 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,027 psi | 85% | 2838 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 56,173 psi | 86% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,956 psi | 88% | 2881 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 57,029 psi | 88% | 2979 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 58,465 psi | 90% | 2848 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,101 psi | 86% | 2805 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,986 psi | 89% | 2930 fps | 98.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,521 psi | 85% | 2923 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,564 psi | 85% | 2927 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,029 psi | 88% | 2828 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,145 psi | 88% | 2848 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,812 psi | 89% | 2940 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,259 psi | 85% | 2907 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,145 psi | 88% | 2917 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,418 psi | 84% | 2920 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,430 psi | 79% | 2851 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,730 psi | 69% | 2782 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,201 psi | 85% | 2992 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 58,494 psi | 90% | 2867 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,980 psi | 77% | 2844 fps | 97.7% |
| Bofors RP3 | <<locked>> | 86% | 57,914 psi | 89% | 2844 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,418 psi | 84% | 2920 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 57,232 psi | 88% | 2835 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 58,320 psi | 90% | 2864 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,622 psi | 86% | 2884 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 90% | 58,813 psi | 90% | 2894 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 98% | 55,782 psi | 86% | 2871 fps | 96.8% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 58,291 psi | 90% | 2907 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 58,146 psi | 89% | 2861 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,086 psi | 86% | 2848 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,918 psi | 68% | 2815 fps | 97% |
| Hodgdon Superformance | <<locked>> | 90% | 55,622 psi | 86% | 2920 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,564 psi | 56% | 1745 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,420 psi | 87% | 2805 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,579 psi | 86% | 2785 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 58,117 psi | 89% | 2822 fps | 99.6% |
| IMR 4350 | <<locked>> | 94% | 58,334 psi | 90% | 2871 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,259 psi | 85% | 2805 fps | 99.4% |
| IMR 4831 | <<locked>> | 94% | 57,392 psi | 88% | 2874 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 58,668 psi | 90% | 2877 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,232 psi | 88% | 2854 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,910 psi | 81% | 2894 fps | 97% |
| Lovex S060 | <<locked>> | 82% | 56,956 psi | 88% | 2769 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,796 psi | 86% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,448 psi | 85% | 2805 fps | 99.9% |
| Lovex S070 | <<locked>> | 92% | 56,695 psi | 87% | 2844 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,585 psi | 70% | 2690 fps | 98.9% |
| Norma 201 | <<locked>> | 82% | 57,116 psi | 88% | 2789 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,943 psi | 89% | 2785 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,434 psi | 87% | 2835 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,448 psi | 85% | 2867 fps | 98.3% |
| Norma MRPᴾ | <<locked>> | 100% | 58,001 psi | 89% | 3005 fps | 99.7% |
| Norma URP | <<locked>> | 92% | 55,550 psi | 85% | 2867 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,435 psi | 88% | 2864 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,388 psi | 82% | 2913 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 94% | 58,262 psi | 90% | 2927 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,732 psi | 73% | 2792 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,246 psi | 57% | 1788 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 58,262 psi | 90% | 2851 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 58,363 psi | 90% | 2917 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 58,740 psi | 90% | 2949 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,811 psi | 87% | 2907 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,259 psi | 85% | 2933 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,729 psi | 67% | 2805 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 57,885 psi | 89% | 2792 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 58,073 psi | 89% | 2841 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,101 psi | 86% | 2844 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 98% | 56,565 psi | 87% | 2907 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 57,232 psi | 88% | 2835 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,448 psi | 85% | 2805 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 55,796 psi | 86% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,695 psi | 87% | 2844 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,057 psi | 86% | 2851 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,811 psi | 87% | 2818 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,943 psi | 89% | 2717 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,405 psi | 85% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,998 psi | 85% | 2756 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,086 psi | 86% | 2900 fps | 98.7% |
| Somchem S335 | <<locked>> | 82% | 57,522 psi | 88% | 2713 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,870 psi | 89% | 2835 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,682 psi | 89% | 2838 fps | 97.1% |
| Somchem S365 | <<locked>> | 94% | 55,129 psi | 85% | 2871 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,203 psi | 88% | 2881 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 82% | 58,494 psi | 90% | 2697 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 58,175 psi | 89% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 58,581 psi | 90% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,695 psi | 86% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,682 psi | 89% | 2861 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,939 psi | 81% | 2802 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 84% | 56,724 psi | 87% | 2762 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,913 psi | 88% | 2867 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,783 psi | 89% | 2930 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 58,204 psi | 90% | 2995 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,363 psi | 88% | 2825 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,622 psi | 86% | 2884 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,731 psi | 72% | 2917 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,072 psi | 88% | 2828 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,595 psi | 89% | 2877 fps | 98.7% |
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 2495 | <<locked>> | 80% | 52,359 psi | 81% | 2671 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,922 psi | 77% | 2680 fps | 98.2% |
| Accurate 3100 | <<locked>> | 86% | 34,229 psi | 53% | 2457 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 49,574 psi | 76% | 2677 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,942 psi | 58% | 2552 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 96% | 49,458 psi | 76% | 2854 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 55,013 psi | 85% | 2799 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,601 psi | 72% | 2654 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,843 psi | 64% | 2644 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 96% | 48,501 psi | 75% | 2802 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,779 psi | 80% | 2867 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,326 psi | 73% | 2680 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,531 psi | 78% | 2746 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,883 psi | 57% | 2562 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,843 psi | 64% | 2687 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,539 psi | 64% | 2641 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,858 psi | 64% | 2690 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,064 psi | 42% | 2323 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,605 psi | 50% | 2493 fps | 95.8% |
| Alliant Reloder-26 | 54.1 gr | 82% | 30,966 psi | 48% | 2493 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,824 psi | 84% | 2815 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 41,046 psi | 63% | 2671 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 47,630 psi | 73% | 2690 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,858 psi | 64% | 2690 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 41,945 psi | 65% | 2569 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 47,834 psi | 74% | 2700 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 39,914 psi | 61% | 2602 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 42,699 psi | 66% | 2618 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 94% | 48,776 psi | 75% | 2753 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,894 psi | 78% | 2792 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,476 psi | 53% | 2457 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,417 psi | 81% | 2792 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,220 psi | 63% | 2753 fps | 96% |
| Hodgdon Superformance | 54.4 gr | 80% | 38,696 psi | 60% | 2605 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 42% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,055 psi | 82% | 2756 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,023 psi | 75% | 2687 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,445 psi | 79% | 2720 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 37,507 psi | 58% | 2493 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,308 psi | 67% | 2598 fps | 97.4% |
| IMR 4831 | <<locked>> | 80% | 36,521 psi | 56% | 2510 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 51,793 psi | 80% | 2776 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,384 psi | 73% | 2690 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 96% | 46,470 psi | 71% | 2779 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 53,621 psi | 82% | 2720 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,269 psi | 76% | 2680 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,799 psi | 63% | 2546 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 38,972 psi | 60% | 2526 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 33,083 psi | 51% | 2431 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 53,722 psi | 83% | 2740 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,433 psi | 84% | 2736 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,879 psi | 77% | 2733 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,279 psi | 65% | 2635 fps | 95.4% |
| Norma MRP | <<locked>> | 86% | 35,853 psi | 55% | 2585 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 37,594 psi | 58% | 2546 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 50,227 psi | 77% | 2756 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,108 psi | 71% | 2782 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 36,550 psi | 56% | 2536 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 94% | 38,377 psi | 59% | 2602 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,876 psi | 43% | 1598 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,051 psi | 74% | 2687 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,752 psi | 84% | 2864 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,483 psi | 68% | 2736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,579 psi | 58% | 2569 fps | 98.3% |
| ReloadSwiss RS 70 | 52.3 gr | 80% | 36,521 psi | 56% | 2575 fps | 97.7% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,087 psi | 59% | 2671 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 51,140 psi | 79% | 2694 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,773 psi | 69% | 2638 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,195 psi | 71% | 2677 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 88% | 40,640 psi | 63% | 2625 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 41,945 psi | 65% | 2569 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,799 psi | 63% | 2546 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 49,269 psi | 76% | 2680 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,972 psi | 60% | 2526 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,006 psi | 71% | 2694 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,432 psi | 82% | 2772 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,404 psi | 84% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,064 psi | 71% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,972 psi | 61% | 2493 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,248 psi | 62% | 2618 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 54,157 psi | 83% | 2671 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,136 psi | 69% | 2638 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,560 psi | 78% | 2726 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 34,113 psi | 52% | 2507 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 38,566 psi | 59% | 2549 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 54,984 psi | 85% | 2654 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,474 psi | 79% | 2657 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,503 psi | 79% | 2667 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,989 psi | 66% | 2566 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,102 psi | 60% | 2546 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 37,971 psi | 58% | 2530 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 49,748 psi | 77% | 2664 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,435 psi | 59% | 2546 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 29,849 psi | 46% | 2398 fps | 96.7% |
| Vihtavuori N560 | <<locked>> | 94% | 47,543 psi | 73% | 2815 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,101 psi | 59% | 2516 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 39,914 psi | 61% | 2602 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,931 psi | 37% | 2290 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,374 psi | 82% | 2776 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,640 psi | 63% | 2589 fps | 95.1% |
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 | 156gr | Norma ORYX. Norma MRP delivers the highest muzzle velocity at 3,005 fps; across all powders the maximum-charge window runs from 1,745 fps to 3,005 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 56–90 %, leaving at least 10 % headroom. The 156.0 gr projectile in 0.284" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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. Alliant Reloder-26, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 156gr | Norma ORYX 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.