Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 145gr | Prvi Partizan SP bullet and 51 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 84% | 55,230 psi | 87% | 2894 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 2904 fps | 97% |
| Accurate MAGPRO | <<locked>> | 82% | 54,230 psi | 85% | 2989 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 82% | 55,854 psi | 88% | 2979 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 54,679 psi | 86% | 2989 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 92% | 54,317 psi | 85% | 2969 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 96% | 55,492 psi | 87% | 3084 fps | 98.6% |
| ADI AR 2225 | <<locked>> | 94% | 54,172 psi | 85% | 2992 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,014 psi | 88% | 2972 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,014 psi | 88% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,448 psi | 87% | 2966 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 55,317 psi | 87% | 2986 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 57,421 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 54,607 psi | 86% | 2972 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 57,638 psi | 90% | 3061 fps | 98.6% |
| Alliant Reloder-50 | <<locked>> | 96% | 53,809 psi | 84% | 2982 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,187 psi | 86% | 2946 fps | 98.3% |
| Bofors RP15 | <<locked>> | 86% | 54,911 psi | 86% | 2979 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 54,592 psi | 86% | 2986 fps | 99.9% |
| Bofors RP5 | <<locked>> | 84% | 55,317 psi | 87% | 2986 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 55,695 psi | 87% | 2989 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 57,334 psi | 90% | 2982 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,144 psi | 88% | 2966 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 88% | 54,012 psi | 85% | 3054 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,913 psi | 59% | 1988 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 57,203 psi | 90% | 2959 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 86% | 57,363 psi | 90% | 3038 fps | 99.9% |
| IMR 8133 Enduron | <<locked>> | 98% | 57,188 psi | 90% | 3035 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 57,188 psi | 90% | 2923 fps | 100% |
| Norma 217 | <<locked>> | 96% | 54,795 psi | 86% | 2999 fps | 100% |
| Norma MRP | <<locked>> | 82% | 55,608 psi | 87% | 2999 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 54,723 psi | 86% | 2995 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 88% | 57,711 psi | 90% | 2982 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,870 psi | 61% | 2031 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 55,042 psi | 86% | 3035 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 54,462 psi | 85% | 2999 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 82% | 56,086 psi | 88% | 2946 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 82% | 55,288 psi | 87% | 2959 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 53,330 psi | 84% | 2913 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 54,926 psi | 86% | 2953 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 57,653 psi | 90% | 2933 fps | 99.7% |
| Somchem S385 | <<locked>> | 82% | 55,680 psi | 87% | 2930 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 55,898 psi | 88% | 2913 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 55,637 psi | 87% | 2933 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 55,347 psi | 87% | 2930 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 54,882 psi | 86% | 3002 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 88% | 56,565 psi | 89% | 2999 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 90% | 54,607 psi | 86% | 3002 fps | 99% |
| Vihtavuori N570 | <<locked>> | 92% | 56,260 psi | 88% | 3068 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 84% | 54,578 psi | 86% | 2982 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,506 psi | 87% | 2923 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% | 48,138 psi | 75% | 2785 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 47,761 psi | 75% | 2835 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 80% | 50,546 psi | 79% | 2923 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 80% | 52,214 psi | 82% | 2920 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 47,427 psi | 74% | 2864 fps | 98.8% |
| ADI AR 2217 | <<locked>> | 80% | 35,346 psi | 55% | 2598 fps | 95.7% |
| ADI AR 2218 | 93 gr | 90% | 44,150 psi | 69% | 2858 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 32,779 psi | 51% | 2569 fps | 97.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 52,460 psi | 82% | 2917 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 52,460 psi | 82% | 2917 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 51,967 psi | 81% | 2910 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 48,211 psi | 76% | 2867 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 46,934 psi | 74% | 2799 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,191 psi | 65% | 2746 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 45,832 psi | 72% | 2851 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 92% | 46,180 psi | 72% | 2844 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,208 psi | 71% | 2769 fps | 95.9% |
| Bofors RP15 | <<locked>> | 80% | 44,817 psi | 70% | 2802 fps | 99% |
| Bofors RP30 | <<locked>> | 80% | 38,464 psi | 60% | 2677 fps | 96.9% |
| Bofors RP5 | <<locked>> | 80% | 48,211 psi | 76% | 2867 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 38,551 psi | 60% | 2677 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 80% | 49,806 psi | 78% | 2861 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 48,936 psi | 77% | 2844 fps | 98.6% |
| Hodgdon Retumbo | 78 gr | 80% | 40,190 psi | 63% | 2795 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,384 psi | 44% | 1785 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,372 psi | 79% | 2848 fps | 99% |
| IMR 7828 SSC | <<locked>> | 80% | 46,238 psi | 72% | 2848 fps | 98.6% |
| IMR 8133 Enduron | <<locked>> | 84% | 35,041 psi | 55% | 2608 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 41,423 psi | 65% | 2664 fps | 99.8% |
| Norma 217 | <<locked>> | 80% | 30,690 psi | 48% | 2507 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 51,793 psi | 81% | 2940 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 47,021 psi | 74% | 2867 fps | 99% |
| Ramshot Magnum | <<locked>> | 80% | 42,511 psi | 67% | 2736 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,138 psi | 46% | 1824 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 40,074 psi | 63% | 2769 fps | 99.6% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 39,958 psi | 63% | 2723 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 52,547 psi | 82% | 2890 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 80% | 51,721 psi | 81% | 2900 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 46,253 psi | 72% | 2789 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 51,372 psi | 81% | 2900 fps | 99.8% |
| Somchem S361 | <<locked>> | 80% | 53,809 psi | 84% | 2874 fps | 99.3% |
| Somchem S385 | <<locked>> | 80% | 52,040 psi | 82% | 2871 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,701 psi | 72% | 2749 fps | 99.6% |
| Vihtavuori N170 | <<locked>> | 88% | 51,808 psi | 81% | 2871 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 80% | 51,822 psi | 81% | 2877 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,184 psi | 80% | 2940 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 80% | 42,786 psi | 67% | 2756 fps | 97.6% |
| Vihtavuori N568 | <<locked>> | 82% | 40,770 psi | 64% | 2740 fps | 95.6% |
| Vihtavuori N570 | 89 gr | 88% | 48,457 psi | 76% | 2927 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 46,746 psi | 73% | 2864 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,182 psi | 76% | 2802 fps | 99.6% |
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 51 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 145gr | Prvi Partizan SP. ADI AR 2218 delivers the highest muzzle velocity at 3,084 fps; across all powders the maximum-charge window runs from 1,988 fps to 3,084 fps. Accurate 8700 gives the best case fill at 100 %, and 51 of the 51 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 145.0 gr projectile in 0.284" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, ReloadSwiss RS 14 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 .284 | 145gr | Prvi Partizan SP 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.