Load Specifications
Bullet:.284 | 155gr | Geco EXPRESS
Bullet Manufacturer:Geco
Bullet Weight:155 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:1:11.0
Load data in caliber 7 mm Rem. SA Ultra Mag. with .284 | 155gr | Geco EXPRESS bullet and 109 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-17 and ReloadSwiss RS 60.
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% | 57,159 psi | 88% | 2733 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 58,639 psi | 90% | 2808 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,199 psi | 80% | 2795 fps | 99.5% |
| Accurate 4064 | <<locked>> | 86% | 57,624 psi | 89% | 2792 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 58,566 psi | 90% | 2904 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 54,331 psi | 84% | 2933 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 82% | 56,463 psi | 87% | 2818 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,798 psi | 89% | 2828 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,550 psi | 85% | 2890 fps | 98.2% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,330 psi | 82% | 2881 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 58,653 psi | 90% | 2812 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,232 psi | 88% | 2953 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,521 psi | 85% | 2884 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 58,363 psi | 90% | 2844 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 58,798 psi | 90% | 2871 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,332 psi | 85% | 2904 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,681 psi | 87% | 2930 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 58,363 psi | 90% | 2930 fps | 98.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,040 psi | 80% | 2881 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,936 psi | 75% | 2815 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,772 psi | 66% | 2740 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,434 psi | 87% | 3012 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,420 psi | 87% | 2838 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,703 psi | 73% | 2802 fps | 96.9% |
| Bofors RP3 | <<locked>> | 86% | 55,912 psi | 86% | 2815 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,040 psi | 80% | 2881 fps | 97.9% |
| Bofors RP7 | <<locked>> | 90% | 55,259 psi | 85% | 2799 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 86% | 56,217 psi | 86% | 2831 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 56,884 psi | 88% | 2900 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 90% | 56,811 psi | 87% | 2861 fps | 98.7% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,246 psi | 88% | 2887 fps | 96.8% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,985 psi | 86% | 2867 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 82% | 57,087 psi | 88% | 2825 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,637 psi | 86% | 2825 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,377 psi | 88% | 2864 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,159 psi | 88% | 2940 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,361 psi | 56% | 1736 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 58,349 psi | 90% | 2828 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,972 psi | 89% | 2802 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,174 psi | 88% | 2805 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,362 psi | 87% | 2792 fps | 99.3% |
| IMR 4350 | <<locked>> | 94% | 56,202 psi | 86% | 2835 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,739 psi | 87% | 2825 fps | 99.3% |
| IMR 4831 | <<locked>> | 96% | 58,711 psi | 90% | 2890 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,579 psi | 87% | 2844 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 58,653 psi | 90% | 2871 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 50,720 psi | 78% | 2851 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 82% | 58,653 psi | 90% | 2812 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,985 psi | 88% | 2792 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,361 psi | 85% | 2743 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,319 psi | 88% | 2799 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,942 psi | 88% | 2822 fps | 99.9% |
| Lovex S070 | <<locked>> | 94% | 58,363 psi | 90% | 2867 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,424 psi | 67% | 2648 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 58,668 psi | 90% | 2808 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,840 psi | 86% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 86% | 58,044 psi | 89% | 2854 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,985 psi | 88% | 2887 fps | 98.3% |
| Norma MRPᴾ | <<locked>> | 100% | 55,129 psi | 85% | 2963 fps | 99.4% |
| Norma URP | <<locked>> | 94% | 57,058 psi | 88% | 2887 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,288 psi | 85% | 2835 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,923 psi | 78% | 2864 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 94% | 55,738 psi | 86% | 2887 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,266 psi | 70% | 2740 fps | 97% |
| Ramshot TAC | <<locked>> | 82% | 58,798 psi | 90% | 2844 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,057 psi | 57% | 1778 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,318 psi | 87% | 2818 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,159 psi | 86% | 2884 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,362 psi | 87% | 2920 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 58,102 psi | 89% | 2923 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,739 psi | 87% | 2956 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,597 psi | 64% | 2749 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 84% | 55,869 psi | 86% | 2762 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,782 psi | 86% | 2808 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,319 psi | 88% | 2858 fps | 97.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,827 psi | 89% | 2920 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 55,259 psi | 85% | 2799 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,942 psi | 88% | 2822 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,985 psi | 88% | 2792 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,319 psi | 88% | 2799 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 58,363 psi | 90% | 2867 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,450 psi | 88% | 2867 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,957 psi | 89% | 2828 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 58,784 psi | 90% | 2844 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,159 psi | 86% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,101 psi | 88% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,739 psi | 87% | 2776 fps | 99.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,334 psi | 88% | 2917 fps | 98.7% |
| Somchem S335 | <<locked>> | 82% | 55,869 psi | 86% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,421 psi | 88% | 2808 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,941 psi | 86% | 2805 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,651 psi | 86% | 2802 fps | 96.4% |
| Somchem S365 | <<locked>> | 96% | 55,956 psi | 86% | 2884 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 58,523 psi | 90% | 2894 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 82% | 56,652 psi | 87% | 2674 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,231 psi | 87% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,594 psi | 87% | 2736 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,159 psi | 88% | 2779 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,593 psi | 86% | 2828 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,386 psi | 78% | 2759 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 86% | 58,204 psi | 90% | 2782 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 58,320 psi | 90% | 2887 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,071 psi | 85% | 2894 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,564 psi | 85% | 2949 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,027 psi | 85% | 2795 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,159 psi | 88% | 2907 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,367 psi | 68% | 2871 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 58,784 psi | 90% | 2851 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,940 psi | 85% | 2835 fps | 98.1% |
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% | 50,357 psi | 77% | 2644 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,254 psi | 74% | 2648 fps | 97.6% |
| Accurate 3100 | <<locked>> | 88% | 34,766 psi | 53% | 2470 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 47,688 psi | 73% | 2651 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,289 psi | 56% | 2520 fps | 98% |
| Accurate MAGPRO | <<locked>> | 98% | 50,502 psi | 78% | 2871 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 53,258 psi | 82% | 2772 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,266 psi | 70% | 2628 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 42,917 psi | 66% | 2664 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 98% | 49,908 psi | 77% | 2822 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 55,361 psi | 85% | 2766 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,501 psi | 76% | 2831 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 42,989 psi | 66% | 2664 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,629 psi | 70% | 2651 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,805 psi | 75% | 2720 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,433 psi | 55% | 2526 fps | 98.1% |
| Alliant Reloder-17 | 49.8 gr | 80% | 40,074 psi | 62% | 2651 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,482 psi | 65% | 2657 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,641 psi | 66% | 2707 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,918 psi | 40% | 2283 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,301 psi | 51% | 2510 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 84% | 31,662 psi | 49% | 2510 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,982 psi | 82% | 2785 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 41,814 psi | 64% | 2687 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 45,890 psi | 71% | 2661 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,641 psi | 66% | 2707 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 40,495 psi | 62% | 2536 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 46,238 psi | 71% | 2671 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 38,189 psi | 59% | 2562 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 41,234 psi | 63% | 2585 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 96% | 49,821 psi | 77% | 2766 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,373 psi | 81% | 2808 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 53,882 psi | 83% | 2779 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,967 psi | 51% | 2425 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,415 psi | 78% | 2762 fps | 100% |
| Hodgdon Superformance | <<locked>> | 80% | 37,101 psi | 57% | 2566 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,166 psi | 42% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,343 psi | 79% | 2726 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,491 psi | 84% | 2756 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,587 psi | 73% | 2661 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,719 psi | 76% | 2687 fps | 98.5% |
| IMR 4350 | <<locked>> | 82% | 38,566 psi | 59% | 2516 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,843 psi | 64% | 2566 fps | 96.8% |
| IMR 4831 | <<locked>> | 80% | 34,780 psi | 54% | 2470 fps | 97.6% |
| IMR 4895 | <<locked>> | 80% | 50,067 psi | 77% | 2746 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 48,805 psi | 75% | 2713 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 98% | 47,471 psi | 73% | 2792 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 55,361 psi | 85% | 2766 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 53,432 psi | 82% | 2743 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,272 psi | 80% | 2697 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,805 psi | 74% | 2657 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,349 psi | 61% | 2516 fps | 97.5% |
| Lovex S070 | <<locked>> | 80% | 37,550 psi | 58% | 2493 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 33,605 psi | 52% | 2444 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 51,938 psi | 80% | 2713 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,634 psi | 81% | 2713 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,182 psi | 74% | 2703 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,497 psi | 67% | 2654 fps | 95.5% |
| Norma MRP | <<locked>> | 88% | 36,579 psi | 56% | 2602 fps | 95% |
| Norma URP | <<locked>> | 80% | 35,998 psi | 55% | 2510 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 48,124 psi | 74% | 2723 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,485 psi | 73% | 2802 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 34,983 psi | 54% | 2497 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 96% | 39,204 psi | 60% | 2615 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 55,303 psi | 85% | 2792 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 43% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,340 psi | 71% | 2654 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,504 psi | 81% | 2831 fps | 100% |
| ReloadSwiss RS 60 | 49.8 gr | 80% | 42,598 psi | 66% | 2703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,853 psi | 55% | 2533 fps | 97.6% |
| ReloadSwiss RS 70 | 50.5 gr | 80% | 34,940 psi | 54% | 2536 fps | 96.8% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,957 psi | 60% | 2687 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 49,676 psi | 76% | 2671 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,033 psi | 66% | 2605 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 47,427 psi | 73% | 2697 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 90% | 41,510 psi | 64% | 2638 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 40,495 psi | 62% | 2536 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,349 psi | 61% | 2516 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,432 psi | 82% | 2743 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,805 psi | 74% | 2657 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,550 psi | 58% | 2493 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,179 psi | 68% | 2661 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 54,056 psi | 83% | 2772 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,605 psi | 79% | 2740 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,852 psi | 81% | 2648 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,657 psi | 69% | 2520 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,624 psi | 59% | 2464 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,118 psi | 63% | 2635 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 52,504 psi | 81% | 2648 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,925 psi | 83% | 2762 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,468 psi | 67% | 2605 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 52,011 psi | 80% | 2743 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 32,576 psi | 50% | 2470 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 39,552 psi | 61% | 2569 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 53,432 psi | 82% | 2631 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,792 psi | 77% | 2631 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,806 psi | 77% | 2644 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,437 psi | 64% | 2536 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,594 psi | 58% | 2513 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 94% | 41,510 psi | 64% | 2598 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 48,196 psi | 74% | 2641 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,999 psi | 57% | 2513 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 28,340 psi | 44% | 2359 fps | 95.7% |
| Vihtavuori N560 | <<locked>> | 96% | 48,443 psi | 75% | 2828 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,753 psi | 57% | 2487 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,189 psi | 59% | 2562 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,121 psi | 40% | 2372 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,488 psi | 79% | 2746 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 41,539 psi | 64% | 2605 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 109 powders for 7 mm Rem. SA Ultra Mag. loaded with the .284 | 155gr | Geco EXPRESS. Alliant Reloder-26 delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,736 fps to 3,012 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 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 155.0 gr projectile in 0.284" calls for a 1:11.0 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-17, ReloadSwiss RS 60 rank at the top here: for 7 mm Rem. SA Ultra Mag. with the .284 | 155gr | Geco EXPRESS 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.