Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .285 | 139gr | Prvi Partizan SP bullet and 49 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ADI AR 2218 and Vihtavuori N570.
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 3100 | <<locked>> | 84% | 55,056 psi | 86% | 2933 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 2940 fps | 96.7% |
| Accurate MAGPRO | <<locked>> | 82% | 54,143 psi | 85% | 3028 fps | 99% |
| ADI AR 2209 | <<locked>> | 82% | 55,796 psi | 87% | 3022 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 54,708 psi | 86% | 3031 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 92% | 54,288 psi | 85% | 3012 fps | 99.8% |
| ADI AR 2218 | <<locked>> | 96% | 55,434 psi | 87% | 3123 fps | 98.3% |
| ADI AR 2225 | <<locked>> | 94% | 54,172 psi | 85% | 3035 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,390 psi | 87% | 3009 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 55,317 psi | 87% | 3028 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 57,261 psi | 90% | 2992 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 54,505 psi | 85% | 3012 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 57,609 psi | 90% | 3100 fps | 98.4% |
| Alliant Reloder-50 | <<locked>> | 96% | 53,896 psi | 84% | 3022 fps | 97.2% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,187 psi | 86% | 2986 fps | 98.1% |
| Bofors RP15 | <<locked>> | 86% | 54,737 psi | 86% | 3018 fps | 99.9% |
| Bofors RP30 | <<locked>> | 90% | 54,418 psi | 85% | 3022 fps | 99.8% |
| Bofors RP5 | <<locked>> | 84% | 55,317 psi | 87% | 3028 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 55,666 psi | 87% | 3031 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 57,116 psi | 90% | 3022 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,159 psi | 88% | 3009 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 88% | 53,853 psi | 84% | 3094 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,913 psi | 59% | 2031 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 57,101 psi | 89% | 3002 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 86% | 57,101 psi | 89% | 3077 fps | 99.8% |
| IMR 8133 Enduron | <<locked>> | 98% | 57,174 psi | 90% | 3071 fps | 99.9% |
| Lovex S071 | <<locked>> | 90% | 57,159 psi | 90% | 2966 fps | 100% |
| Norma 217 | <<locked>> | 96% | 54,824 psi | 86% | 3038 fps | 100% |
| Norma MRP | <<locked>> | 82% | 55,361 psi | 87% | 3038 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 54,621 psi | 86% | 3035 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 88% | 57,624 psi | 90% | 3025 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,856 psi | 61% | 2073 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 55,042 psi | 86% | 3074 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 54,404 psi | 85% | 3038 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 82% | 56,043 psi | 88% | 2992 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 82% | 55,259 psi | 87% | 3005 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 53,287 psi | 84% | 2953 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 54,897 psi | 86% | 2999 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 57,580 psi | 90% | 2972 fps | 99.6% |
| Somchem S385 | <<locked>> | 82% | 55,579 psi | 87% | 2969 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 55,883 psi | 88% | 2959 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 55,477 psi | 87% | 2972 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 82% | 55,114 psi | 86% | 2972 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 54,679 psi | 86% | 3041 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 88% | 56,362 psi | 88% | 3038 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 90% | 54,679 psi | 86% | 3041 fps | 98.9% |
| Vihtavuori N570 | <<locked>> | 92% | 56,260 psi | 88% | 3107 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 54,462 psi | 85% | 3025 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,477 psi | 87% | 2966 fps | 100% |
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% | 47,950 psi | 75% | 2822 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 47,718 psi | 75% | 2871 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 80% | 50,357 psi | 79% | 2963 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 80% | 52,069 psi | 82% | 2963 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 80% | 47,384 psi | 74% | 2904 fps | 98.6% |
| ADI AR 2217 | <<locked>> | 80% | 35,375 psi | 55% | 2635 fps | 95.3% |
| ADI AR 2218 | 97.3 gr | 92% | 47,572 psi | 75% | 2969 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 32,648 psi | 51% | 2598 fps | 97.4% |
| Alliant Reloder-19 | <<locked>> | 80% | 51,808 psi | 81% | 2953 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 48,167 psi | 75% | 2907 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 46,818 psi | 73% | 2838 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,046 psi | 64% | 2782 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 45,832 psi | 72% | 2887 fps | 95.4% |
| Alliant Reloder-50 | <<locked>> | 94% | 49,792 psi | 78% | 2949 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,092 psi | 71% | 2805 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 44,817 psi | 70% | 2841 fps | 98.8% |
| Bofors RP30 | <<locked>> | 80% | 38,305 psi | 60% | 2710 fps | 96.5% |
| Bofors RP5 | <<locked>> | 80% | 48,167 psi | 75% | 2907 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 80% | 38,537 psi | 60% | 2713 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 80% | 49,748 psi | 78% | 2900 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 48,907 psi | 77% | 2884 fps | 98.4% |
| Hodgdon Retumbo | 79.8 gr | 80% | 40,016 psi | 63% | 2828 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,456 psi | 45% | 1827 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,227 psi | 79% | 2887 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 80% | 46,209 psi | 72% | 2887 fps | 98.4% |
| IMR 8133 Enduron | <<locked>> | 86% | 37,478 psi | 59% | 2700 fps | 96.1% |
| Lovex S071 | <<locked>> | 80% | 41,234 psi | 65% | 2700 fps | 99.7% |
| Norma 217 | <<locked>> | 80% | 30,560 psi | 48% | 2536 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 51,648 psi | 81% | 2982 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 46,905 psi | 74% | 2904 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 80% | 42,380 psi | 66% | 2769 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,211 psi | 46% | 1867 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 40,001 psi | 63% | 2805 fps | 99.5% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 39,842 psi | 62% | 2756 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 52,417 psi | 82% | 2933 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 80% | 51,532 psi | 81% | 2943 fps | 99.8% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 49,676 psi | 78% | 2887 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 51,227 psi | 80% | 2940 fps | 99.8% |
| Somchem S361 | <<locked>> | 80% | 53,809 psi | 84% | 2917 fps | 99.2% |
| Somchem S385 | <<locked>> | 80% | 51,996 psi | 81% | 2913 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,542 psi | 71% | 2785 fps | 99.4% |
| Vihtavuori N170 | <<locked>> | 88% | 51,938 psi | 81% | 2913 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 80% | 51,692 psi | 81% | 2920 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,039 psi | 80% | 2976 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 80% | 42,714 psi | 67% | 2792 fps | 97.2% |
| Vihtavuori N568 | <<locked>> | 82% | 40,741 psi | 64% | 2776 fps | 95.2% |
| Vihtavuori N570 | 91.2 gr | 88% | 48,573 psi | 76% | 2969 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 46,615 psi | 73% | 2904 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,138 psi | 75% | 2844 fps | 99.4% |
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 56 powders for 7 mm Rem. Ultra Mag. loaded with the .285 | 139gr | Prvi Partizan SP. ADI AR 2218 delivers the highest muzzle velocity at 3,123 fps; across all powders the maximum-charge window runs from 2,031 fps to 3,123 fps. Accurate 8700 gives the best case fill at 100 %, and 56 of the 56 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 139.0 gr projectile in 0.285" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, Hodgdon US 869 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. Hodgdon Retumbo, ADI AR 2218, Vihtavuori N570 rank at the top here: for 7 mm Rem. Ultra Mag. with the .285 | 139gr | Prvi Partizan SP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon US 869, Lovex D100, Ramshot LRT burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.