Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 150gr | Hornady CX bullet and 50 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>> | 86% | 55,332 psi | 87% | 2864 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 54,839 psi | 86% | 2972 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 84% | 56,797 psi | 89% | 2959 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 55,521 psi | 87% | 2972 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 94% | 54,621 psi | 86% | 2946 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 98% | 55,492 psi | 87% | 3061 fps | 98.6% |
| ADI AR 2225 | <<locked>> | 96% | 54,099 psi | 85% | 2966 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 56,913 psi | 89% | 2953 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 56,304 psi | 88% | 2949 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 55,912 psi | 88% | 2966 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 54,012 psi | 85% | 2877 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 54,824 psi | 86% | 2946 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 54,578 psi | 86% | 2949 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 57,508 psi | 90% | 3038 fps | 98.6% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 57,392 psi | 90% | 3022 fps | 98.3% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 56,217 psi | 88% | 2933 fps | 98.5% |
| Bofors RP15 | <<locked>> | 88% | 55,332 psi | 87% | 2956 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 54,447 psi | 85% | 2956 fps | 99.9% |
| Bofors RP5 | <<locked>> | 86% | 55,912 psi | 88% | 2966 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 56,260 psi | 88% | 2969 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 54,186 psi | 85% | 2904 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 86% | 57,101 psi | 89% | 2946 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 56,782 psi | 89% | 2864 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 54,143 psi | 85% | 3028 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,666 psi | 59% | 1939 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 54,650 psi | 86% | 2887 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 86% | 53,983 psi | 85% | 2956 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 56,826 psi | 89% | 3002 fps | 100% |
| Lovex S071 | <<locked>> | 92% | 57,232 psi | 90% | 2890 fps | 100% |
| Norma 217 | <<locked>> | 98% | 54,288 psi | 85% | 2966 fps | 100% |
| Norma MRP | <<locked>> | 84% | 55,956 psi | 88% | 2976 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 55,259 psi | 87% | 2976 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 88% | 53,882 psi | 84% | 2904 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,624 psi | 61% | 1985 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 55,100 psi | 86% | 3012 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 54,302 psi | 85% | 2976 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 84% | 57,058 psi | 89% | 2927 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 84% | 55,999 psi | 88% | 2940 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 55,622 psi | 87% | 2933 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 54,868 psi | 86% | 2858 fps | 99.5% |
| Somchem S385 | <<locked>> | 84% | 56,217 psi | 88% | 2904 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 56,565 psi | 89% | 2890 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 55,883 psi | 88% | 2910 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 84% | 55,593 psi | 87% | 2904 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 55,332 psi | 87% | 2979 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 90% | 56,739 psi | 89% | 2976 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 92% | 54,781 psi | 86% | 2979 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 94% | 56,101 psi | 88% | 3041 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 54,476 psi | 85% | 2956 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 56,260 psi | 88% | 2904 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% | 44,889 psi | 70% | 2703 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 47,166 psi | 74% | 2838 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 80% | 49,371 psi | 77% | 2841 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 44,628 psi | 70% | 2785 fps | 98.3% |
| ADI AR 2217 | <<locked>> | 82% | 35,404 psi | 55% | 2579 fps | 95.9% |
| ADI AR 2218 | 90.2 gr | 92% | 44,164 psi | 69% | 2838 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 80% | 30,269 psi | 47% | 2477 fps | 96.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 49,661 psi | 78% | 2838 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 80% | 49,182 psi | 77% | 2835 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 45,295 psi | 71% | 2785 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,947 psi | 69% | 2720 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 38,174 psi | 60% | 2661 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 50,488 psi | 79% | 2890 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 45,469 psi | 71% | 2828 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 94% | 45,310 psi | 71% | 2808 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 42,830 psi | 67% | 2694 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 42,061 psi | 66% | 2723 fps | 98.6% |
| Bofors RP30 | <<locked>> | 80% | 35,491 psi | 56% | 2589 fps | 96% |
| Bofors RP5 | <<locked>> | 80% | 45,295 psi | 71% | 2785 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 80% | 35,955 psi | 56% | 2592 fps | 96.8% |
| Hodgdon H4831 | <<locked>> | 80% | 47,152 psi | 74% | 2782 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,267 psi | 73% | 2766 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 53,055 psi | 83% | 2815 fps | 100% |
| Hodgdon Retumbo | 74 gr | 80% | 37,260 psi | 58% | 2703 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,224 psi | 44% | 1742 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,863 psi | 75% | 2772 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 80% | 43,308 psi | 68% | 2762 fps | 98% |
| IMR 8133 Enduron | <<locked>> | 86% | 34,476 psi | 54% | 2575 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 38,464 psi | 60% | 2579 fps | 99.5% |
| Norma 217 | <<locked>> | 82% | 30,037 psi | 47% | 2474 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 48,414 psi | 76% | 2858 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 43,787 psi | 69% | 2779 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 80% | 39,363 psi | 62% | 2651 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,979 psi | 45% | 1785 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 36,811 psi | 58% | 2677 fps | 99.1% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 39,494 psi | 62% | 2694 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 50,009 psi | 78% | 2815 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 80% | 48,718 psi | 76% | 2822 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 48,370 psi | 76% | 2815 fps | 99.6% |
| Somchem S361 | <<locked>> | 80% | 51,140 psi | 80% | 2799 fps | 99% |
| Somchem S385 | <<locked>> | 80% | 49,139 psi | 77% | 2795 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 42,975 psi | 67% | 2674 fps | 99.2% |
| Vihtavuori N170 | <<locked>> | 88% | 48,660 psi | 76% | 2785 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 48,602 psi | 76% | 2799 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 47,950 psi | 75% | 2854 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 80% | 39,682 psi | 62% | 2664 fps | 96.7% |
| Vihtavuori N568 | <<locked>> | 84% | 40,654 psi | 64% | 2717 fps | 95.7% |
| Vihtavuori N570 | 84.5 gr | 88% | 44,889 psi | 70% | 2838 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 42,989 psi | 67% | 2779 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 45,498 psi | 71% | 2726 fps | 99.3% |
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 | 150gr | Hornady CX. ADI AR 2218 delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,939 fps to 3,061 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 150.0 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. Hodgdon Retumbo, ADI AR 2218, Vihtavuori N570 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 150gr | Hornady CX 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.