Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 140gr | Prvi Partizan PSP BT bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Vihtavuori N570 and Hodgdon Retumbo.
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% | 57,261 psi | 90% | 2963 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 56,536 psi | 89% | 3064 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 82% | 54,215 psi | 85% | 2992 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 86% | 56,971 psi | 89% | 3064 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 94% | 56,391 psi | 88% | 3038 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 98% | 57,595 psi | 90% | 3156 fps | 98.7% |
| ADI AR 2225 | <<locked>> | 96% | 56,014 psi | 88% | 3058 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 54,433 psi | 85% | 2989 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 84% | 57,725 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 57,479 psi | 90% | 3061 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 55,666 psi | 87% | 2969 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 56,536 psi | 89% | 3038 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 56,594 psi | 89% | 3051 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 55,419 psi | 87% | 3064 fps | 97.9% |
| Alliant Reloder-50 | <<locked>> | 98% | 55,782 psi | 87% | 3054 fps | 97.6% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 57,377 psi | 90% | 3015 fps | 98.4% |
| Bofors RP15 | <<locked>> | 88% | 56,884 psi | 89% | 3048 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 56,478 psi | 89% | 3051 fps | 99.9% |
| Bofors RP5 | <<locked>> | 86% | 57,479 psi | 90% | 3061 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 53,809 psi | 84% | 2999 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 84% | 55,724 psi | 87% | 2995 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 54,737 psi | 86% | 2979 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 90% | 55,825 psi | 87% | 3123 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,811 psi | 59% | 2014 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 55,767 psi | 87% | 2976 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 86% | 55,535 psi | 87% | 3048 fps | 99.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 55,042 psi | 86% | 3038 fps | 99.8% |
| Lovex S071 | <<locked>> | 90% | 55,492 psi | 87% | 2936 fps | 100% |
| Norma 217 | <<locked>> | 98% | 56,420 psi | 88% | 3064 fps | 100% |
| Norma MRP | <<locked>> | 82% | 53,824 psi | 84% | 3012 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 56,956 psi | 89% | 3068 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 88% | 55,622 psi | 87% | 2992 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,754 psi | 61% | 2057 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 57,348 psi | 90% | 3110 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 56,565 psi | 89% | 3071 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 82% | 54,578 psi | 86% | 2959 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 84% | 57,595 psi | 90% | 3035 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 51,401 psi | 81% | 2917 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 57,217 psi | 90% | 3028 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 56,202 psi | 88% | 2946 fps | 99.4% |
| Somchem S385 | <<locked>> | 82% | 54,114 psi | 85% | 2943 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 54,302 psi | 85% | 2930 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 57,711 psi | 90% | 3002 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 84% | 57,334 psi | 90% | 2999 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 57,058 psi | 89% | 3074 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 88% | 54,636 psi | 86% | 3005 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 92% | 56,710 psi | 89% | 3074 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 92% | 54,099 psi | 85% | 3071 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 86% | 56,594 psi | 89% | 3051 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 53,911 psi | 84% | 2933 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% | 46,601 psi | 73% | 2795 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 48,892 psi | 77% | 2930 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 80% | 50,676 psi | 79% | 2933 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 80% | 46,050 psi | 72% | 2877 fps | 98.3% |
| ADI AR 2217 | <<locked>> | 82% | 36,767 psi | 58% | 2667 fps | 95.9% |
| ADI AR 2218 | 94.5 gr | 92% | 45,905 psi | 72% | 2930 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 31,589 psi | 50% | 2566 fps | 96.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 50,952 psi | 80% | 2930 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,473 psi | 79% | 2923 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 46,833 psi | 73% | 2877 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,339 psi | 71% | 2812 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 39,639 psi | 62% | 2753 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 52,402 psi | 82% | 2989 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 47,471 psi | 74% | 2920 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 94% | 47,790 psi | 75% | 2910 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,976 psi | 69% | 2776 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 43,497 psi | 68% | 2812 fps | 98.5% |
| Bofors RP30 | <<locked>> | 80% | 37,014 psi | 58% | 2680 fps | 96% |
| Bofors RP5 | <<locked>> | 80% | 46,833 psi | 73% | 2877 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 80% | 37,347 psi | 59% | 2684 fps | 96.8% |
| Hodgdon H4831 | <<locked>> | 80% | 48,501 psi | 76% | 2874 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,645 psi | 75% | 2858 fps | 98.1% |
| Hodgdon Retumbo | 77.5 gr | 80% | 38,638 psi | 61% | 2795 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,369 psi | 44% | 1811 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 49,023 psi | 77% | 2858 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 80% | 44,802 psi | 70% | 2858 fps | 98% |
| IMR 8133 Enduron | <<locked>> | 86% | 36,143 psi | 57% | 2667 fps | 95.5% |
| Lovex S071 | <<locked>> | 80% | 40,030 psi | 63% | 2671 fps | 99.5% |
| Norma 217 | <<locked>> | 82% | 31,618 psi | 50% | 2569 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 50,082 psi | 78% | 2953 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 45,266 psi | 71% | 2871 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 80% | 40,973 psi | 64% | 2740 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,124 psi | 46% | 1854 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 38,479 psi | 60% | 2772 fps | 99.2% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 41,379 psi | 65% | 2792 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 51,097 psi | 80% | 2904 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 80% | 50,154 psi | 79% | 2913 fps | 99.6% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 47,834 psi | 75% | 2854 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 49,806 psi | 78% | 2910 fps | 99.6% |
| Somchem S361 | <<locked>> | 80% | 52,402 psi | 82% | 2887 fps | 99% |
| Somchem S385 | <<locked>> | 80% | 50,705 psi | 79% | 2887 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 44,309 psi | 69% | 2759 fps | 99.2% |
| Vihtavuori N170 | <<locked>> | 88% | 50,285 psi | 79% | 2877 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 50,154 psi | 79% | 2890 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 49,530 psi | 78% | 2949 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 80% | 41,307 psi | 65% | 2759 fps | 96.8% |
| Vihtavuori N568 | <<locked>> | 84% | 42,264 psi | 66% | 2808 fps | 95.7% |
| Vihtavuori N570 | 88.5 gr | 88% | 46,688 psi | 73% | 2930 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 44,759 psi | 70% | 2874 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,891 psi | 73% | 2818 fps | 99.2% |
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 | Prvi Partizan PSP BT. ADI AR 2218 delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 2,014 fps to 3,156 fps. Hodgdon TrailBoss 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 1:12.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, SNPE Vectan SP 13 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. ADI AR 2218, Vihtavuori N570, Hodgdon Retumbo rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 140gr | Prvi Partizan PSP BT 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.