Load Specifications
Bullet Manufacturer:Winchester
Bullet Weight:160 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:1:11.5
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 160gr | Winchester FailSafe 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, Alliant Reloder-26 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.
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 2495 | <<locked>> | 84% | 58,566 psi | 90% | 2707 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,260 psi | 87% | 2736 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,824 psi | 83% | 2779 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 55,376 psi | 85% | 2717 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,260 psi | 87% | 2828 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,086 psi | 86% | 2923 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 82% | 57,696 psi | 89% | 2792 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,448 psi | 85% | 2749 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,014 psi | 88% | 2871 fps | 98.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,766 psi | 84% | 2867 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 58,798 psi | 90% | 2930 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,318 psi | 87% | 2772 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,463 psi | 87% | 2795 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,826 psi | 87% | 2881 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 58,363 psi | 90% | 2907 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,202 psi | 86% | 2858 fps | 98.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,635 psi | 83% | 2864 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,473 psi | 78% | 2795 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,019 psi | 68% | 2726 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 58,436 psi | 90% | 2992 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,740 psi | 89% | 2815 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,139 psi | 76% | 2789 fps | 97.6% |
| Bofors RP3 | <<locked>> | 86% | 57,334 psi | 88% | 2792 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,635 psi | 83% | 2864 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 56,507 psi | 87% | 2779 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 57,551 psi | 89% | 2808 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 58,392 psi | 90% | 2881 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 90% | 58,175 psi | 89% | 2841 fps | 99.1% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 58,798 psi | 90% | 2871 fps | 97.4% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,493 psi | 88% | 2851 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 82% | 58,349 psi | 90% | 2799 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,188 psi | 88% | 2805 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 58,813 psi | 90% | 2838 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,989 psi | 66% | 2753 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 90% | 54,737 psi | 84% | 2864 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,477 psi | 56% | 1709 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,927 psi | 86% | 2753 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 58,421 psi | 90% | 2782 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,508 psi | 88% | 2769 fps | 99.6% |
| IMR 4350 | <<locked>> | 94% | 57,551 psi | 89% | 2812 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,972 psi | 89% | 2802 fps | 99.6% |
| IMR 4831 | <<locked>> | 94% | 56,492 psi | 87% | 2818 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 57,899 psi | 89% | 2822 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,420 psi | 87% | 2799 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,141 psi | 80% | 2838 fps | 96.9% |
| Lovex D073.6 | <<locked>> | 82% | 58,363 psi | 90% | 2766 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 56,449 psi | 87% | 2717 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 58,595 psi | 90% | 2772 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 58,247 psi | 90% | 2802 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 56,115 psi | 86% | 2792 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,802 psi | 69% | 2638 fps | 98.8% |
| Norma 201 | <<locked>> | 82% | 56,579 psi | 87% | 2736 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,072 psi | 88% | 2730 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,753 psi | 86% | 2782 fps | 100% |
| Norma 204 | <<locked>> | 94% | 58,479 psi | 90% | 2867 fps | 98.8% |
| Norma MRPᴾ | <<locked>> | 100% | 56,898 psi | 88% | 2946 fps | 99.7% |
| Norma URP | <<locked>> | 94% | 58,581 psi | 90% | 2864 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,695 psi | 87% | 2808 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,446 psi | 81% | 2854 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 57,261 psi | 88% | 2867 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,659 psi | 72% | 2730 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,188 psi | 57% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,609 psi | 89% | 2795 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,638 psi | 89% | 2861 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 58,001 psi | 89% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,014 psi | 86% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 58,349 psi | 90% | 2936 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,859 psi | 66% | 2746 fps | 97.8% |
| Rottweil R 902 | <<locked>> | 84% | 57,072 psi | 88% | 2736 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,188 psi | 88% | 2782 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 58,740 psi | 90% | 2841 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 98% | 55,593 psi | 86% | 2848 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 90% | 56,507 psi | 87% | 2779 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 58,247 psi | 90% | 2802 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 58,363 psi | 90% | 2766 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 58,595 psi | 90% | 2772 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,115 psi | 86% | 2792 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,259 psi | 85% | 2795 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,144 psi | 86% | 2766 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,276 psi | 88% | 2664 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 58,320 psi | 90% | 2667 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 58,059 psi | 89% | 2756 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,114 psi | 85% | 2841 fps | 98.6% |
| Somchem S335 | <<locked>> | 82% | 57,000 psi | 88% | 2664 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 58,755 psi | 90% | 2785 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,261 psi | 88% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,058 psi | 88% | 2785 fps | 97% |
| Somchem S365 | <<locked>> | 96% | 57,696 psi | 89% | 2861 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,347 psi | 87% | 2825 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 82% | 57,783 psi | 89% | 2644 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,537 psi | 89% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,841 psi | 89% | 2710 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 58,508 psi | 90% | 2756 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,043 psi | 88% | 2808 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,837 psi | 80% | 2743 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 84% | 55,898 psi | 86% | 2710 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,115 psi | 86% | 2812 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,782 psi | 87% | 2871 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,203 psi | 88% | 2936 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,478 psi | 87% | 2772 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 58,668 psi | 90% | 2884 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,803 psi | 70% | 2858 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,478 psi | 87% | 2776 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,521 psi | 87% | 2818 fps | 98.6% |
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% | 51,619 psi | 79% | 2618 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,327 psi | 76% | 2628 fps | 98.1% |
| Accurate 3100 | <<locked>> | 86% | 33,533 psi | 52% | 2408 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 48,907 psi | 75% | 2625 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,391 psi | 58% | 2507 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 98% | 52,127 psi | 80% | 2858 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 54,433 psi | 84% | 2746 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,267 psi | 71% | 2605 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,220 psi | 63% | 2592 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 96% | 47,935 psi | 74% | 2749 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,836 psi | 78% | 2812 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,746 psi | 72% | 2628 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,951 psi | 77% | 2697 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,347 psi | 56% | 2510 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,205 psi | 63% | 2635 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 40,886 psi | 63% | 2589 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,118 psi | 63% | 2638 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,643 psi | 41% | 2277 fps | 96.5% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,155 psi | 49% | 2448 fps | 95.7% |
| Alliant Reloder-26 | 52.3 gr | 82% | 30,400 psi | 47% | 2441 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,230 psi | 83% | 2762 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 40,567 psi | 62% | 2625 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 47,079 psi | 72% | 2641 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,118 psi | 63% | 2638 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 41,437 psi | 64% | 2520 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 80% | 47,369 psi | 73% | 2651 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 39,247 psi | 60% | 2549 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 42,250 psi | 65% | 2569 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 94% | 47,834 psi | 74% | 2697 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,299 psi | 77% | 2740 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 55,085 psi | 85% | 2753 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,924 psi | 52% | 2411 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,706 psi | 80% | 2740 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,321 psi | 62% | 2690 fps | 95.7% |
| Hodgdon Superformance | 52.6 gr | 80% | 38,116 psi | 59% | 2556 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 42% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,475 psi | 81% | 2703 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,660 psi | 75% | 2638 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,749 psi | 78% | 2664 fps | 98.9% |
| IMR 4350 | <<locked>> | 80% | 37,043 psi | 57% | 2448 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,772 psi | 66% | 2546 fps | 97.4% |
| IMR 4831 | <<locked>> | 80% | 35,795 psi | 55% | 2454 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 51,256 psi | 79% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 46,920 psi | 72% | 2644 fps | 95% |
| IMR 7828 SSC | <<locked>> | 96% | 45,643 psi | 70% | 2720 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 54,752 psi | 84% | 2720 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 53,301 psi | 82% | 2671 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,892 psi | 75% | 2635 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,292 psi | 62% | 2500 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 38,493 psi | 59% | 2480 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 32,576 psi | 50% | 2382 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 53,069 psi | 82% | 2687 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,809 psi | 83% | 2684 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,327 psi | 76% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,800 psi | 64% | 2585 fps | 95.4% |
| Norma MRP | <<locked>> | 88% | 37,666 psi | 58% | 2592 fps | 96% |
| Norma URP | <<locked>> | 80% | 37,014 psi | 57% | 2497 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 49,356 psi | 76% | 2700 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,382 psi | 70% | 2726 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 35,955 psi | 55% | 2484 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 94% | 37,710 psi | 58% | 2549 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 43% | 1565 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,427 psi | 73% | 2638 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,896 psi | 83% | 2808 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,801 psi | 67% | 2684 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,970 psi | 57% | 2520 fps | 98.2% |
| ReloadSwiss RS 70 | 50.5 gr | 80% | 35,882 psi | 55% | 2526 fps | 97.6% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,405 psi | 58% | 2618 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 50,763 psi | 78% | 2644 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,164 psi | 68% | 2585 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,556 psi | 70% | 2625 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 88% | 39,943 psi | 61% | 2572 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 41,437 psi | 64% | 2520 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,292 psi | 62% | 2500 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 54,752 psi | 84% | 2720 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,892 psi | 75% | 2635 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,493 psi | 59% | 2480 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,324 psi | 70% | 2638 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,765 psi | 81% | 2717 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,925 psi | 83% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,629 psi | 70% | 2497 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,537 psi | 61% | 2448 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 39,566 psi | 61% | 2566 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 53,577 psi | 82% | 2618 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 55,187 psi | 85% | 2736 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,527 psi | 69% | 2585 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 49,850 psi | 77% | 2671 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 33,591 psi | 52% | 2457 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 38,116 psi | 59% | 2503 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 54,505 psi | 84% | 2605 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,981 psi | 78% | 2608 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,923 psi | 78% | 2618 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,467 psi | 65% | 2516 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,624 psi | 59% | 2500 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 92% | 39,958 psi | 61% | 2533 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 49,298 psi | 76% | 2615 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,014 psi | 58% | 2500 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 29,312 psi | 45% | 2349 fps | 96.6% |
| Vihtavuori N560 | <<locked>> | 94% | 46,717 psi | 72% | 2759 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,695 psi | 58% | 2470 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 39,247 psi | 60% | 2549 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,092 psi | 39% | 2306 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,707 psi | 81% | 2723 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,728 psi | 66% | 2592 fps | 95.8% |
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 104 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 160gr | Winchester FailSafe. Alliant Reloder-26 delivers the highest muzzle velocity at 2,992 fps; across all powders the maximum-charge window runs from 1,709 fps to 2,992 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 56–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.5 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. ReloadSwiss RS 70, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 160gr | Winchester FailSafe 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.