Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 140gr | SAKO Powerhead Blade Pro bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Hodgdon Retumbo and ReloadSwiss RS 76.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 86% | 54,882 psi | 86% | 2930 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 53,809 psi | 84% | 3025 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 84% | 55,767 psi | 87% | 3018 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 86% | 54,549 psi | 85% | 3028 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 96% | 57,595 psi | 90% | 3061 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 98% | 54,360 psi | 85% | 3104 fps | 97.8% |
| ADI AR 2225 | <<locked>> | 98% | 56,840 psi | 89% | 3081 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 55,941 psi | 88% | 3015 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 84% | 55,361 psi | 87% | 3005 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 86% | 55,100 psi | 86% | 3025 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 56,956 psi | 89% | 2992 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 57,595 psi | 90% | 3061 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 53,708 psi | 84% | 3015 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 56,362 psi | 88% | 3087 fps | 98% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 56,391 psi | 88% | 3074 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 55,245 psi | 87% | 2982 fps | 97.8% |
| Bofors RP15 | <<locked>> | 88% | 54,534 psi | 85% | 3018 fps | 99.9% |
| Bofors RP30 | <<locked>> | 94% | 57,464 psi | 90% | 3074 fps | 99.9% |
| Bofors RP5 | <<locked>> | 86% | 55,100 psi | 86% | 3025 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 92% | 55,042 psi | 86% | 3025 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 86% | 57,319 psi | 90% | 3022 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 86% | 56,275 psi | 88% | 3005 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 55,970 psi | 88% | 2933 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 56,768 psi | 89% | 3146 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,724 psi | 59% | 2001 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 57,493 psi | 90% | 3002 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 88% | 56,826 psi | 89% | 3074 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 55,898 psi | 88% | 3058 fps | 99.8% |
| Lovex S071 | <<locked>> | 92% | 56,724 psi | 89% | 2959 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 57,246 psi | 90% | 3084 fps | 100% |
| Norma MRP | <<locked>> | 84% | 55,085 psi | 86% | 3038 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 54,157 psi | 85% | 3031 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 90% | 56,985 psi | 89% | 3015 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,682 psi | 61% | 2047 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 53,708 psi | 84% | 3068 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 57,638 psi | 90% | 3097 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 84% | 56,159 psi | 88% | 2989 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 84% | 55,114 psi | 86% | 2999 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 54,723 psi | 86% | 2992 fps | 99.9% |
| Somchem S361 | <<locked>> | 82% | 54,012 psi | 85% | 2913 fps | 99% |
| Somchem S385 | <<locked>> | 84% | 55,651 psi | 87% | 2969 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 55,622 psi | 87% | 2949 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 55,303 psi | 87% | 2966 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 54,868 psi | 86% | 2969 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 54,447 psi | 85% | 3038 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 90% | 55,883 psi | 88% | 3031 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 92% | 53,693 psi | 84% | 3031 fps | 98.6% |
| Vihtavuori N570 | <<locked>> | 94% | 55,100 psi | 86% | 3094 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 88% | 57,551 psi | 90% | 3077 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 55,506 psi | 87% | 2963 fps | 99.9% |
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 3100 | <<locked>> | 80% | 44,599 psi | 70% | 2766 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 46,601 psi | 73% | 2897 fps | 97.3% |
| ADI AR 2209 | <<locked>> | 80% | 48,602 psi | 76% | 2900 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 43,845 psi | 69% | 2838 fps | 97.6% |
| ADI AR 2217 | <<locked>> | 84% | 37,623 psi | 59% | 2690 fps | 96.1% |
| ADI AR 2218 | <<locked>> | 94% | 46,789 psi | 73% | 2953 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 30,066 psi | 47% | 2526 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 48,950 psi | 77% | 2900 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,501 psi | 76% | 2894 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,657 psi | 70% | 2841 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,352 psi | 68% | 2785 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,594 psi | 59% | 2717 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 49,763 psi | 78% | 2956 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 48,341 psi | 76% | 2946 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 96% | 48,341 psi | 76% | 2930 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 45,194 psi | 71% | 2805 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 41,524 psi | 65% | 2776 fps | 97.9% |
| Bofors RP30 | <<locked>> | 80% | 35,128 psi | 55% | 2641 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 44,657 psi | 70% | 2841 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 80% | 35,534 psi | 56% | 2641 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 80% | 46,470 psi | 73% | 2838 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,600 psi | 71% | 2822 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,330 psi | 82% | 2881 fps | 100% |
| Hodgdon Retumbo | 74.6 gr | 80% | 36,709 psi | 58% | 2753 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,239 psi | 44% | 1798 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,268 psi | 74% | 2828 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 42,569 psi | 67% | 2818 fps | 97.3% |
| IMR 8133 Enduron | <<locked>> | 88% | 36,680 psi | 57% | 2694 fps | 95.6% |
| Lovex S071 | <<locked>> | 80% | 38,377 psi | 60% | 2641 fps | 99.1% |
| Norma 217 | <<locked>> | 84% | 31,995 psi | 50% | 2589 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 47,601 psi | 75% | 2913 fps | 99.8% |
| Ramshot Grand | <<locked>> | 80% | 42,902 psi | 67% | 2828 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 80% | 38,740 psi | 61% | 2700 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,993 psi | 45% | 1841 fps | 100% |
| ReloadSwiss RS 76 | 79.9 gr | 80% | 36,361 psi | 57% | 2730 fps | 98.5% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 38,943 psi | 61% | 2746 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 49,313 psi | 77% | 2874 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 80% | 48,240 psi | 76% | 2884 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,906 psi | 75% | 2881 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 50,604 psi | 79% | 2858 fps | 98.5% |
| Somchem S385 | <<locked>> | 80% | 48,588 psi | 76% | 2854 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 80% | 42,467 psi | 67% | 2730 fps | 98.8% |
| Vihtavuori N170 | <<locked>> | 90% | 51,459 psi | 81% | 2900 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 80% | 48,109 psi | 75% | 2864 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 47,166 psi | 74% | 2910 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 80% | 39,262 psi | 62% | 2720 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 86% | 43,105 psi | 68% | 2835 fps | 95.9% |
| Vihtavuori N570 | 87.1 gr | 90% | 47,456 psi | 74% | 2953 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 42,047 psi | 66% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,889 psi | 70% | 2782 fps | 98.8% |
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 50 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 140gr | SAKO Powerhead Blade Pro. Hodgdon Retumbo delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 2,001 fps to 3,146 fps. Alliant Reloder-50 gives the best case fill at 100 %, and 50 of the 50 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-50, Hodgdon TrailBoss, IMR 8133 Enduron 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 140gr | SAKO Powerhead Blade Pro 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.