Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 160gr | Winchester FailSafe bullet and 45 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 Alliant Reloder-33.
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% | 57,305 psi | 90% | 2815 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 2851 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 82% | 56,797 psi | 89% | 2923 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 84% | 57,116 psi | 90% | 2920 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 57,072 psi | 89% | 2904 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 53,838 psi | 84% | 2959 fps | 98.9% |
| ADI AR 2225 | <<locked>> | 94% | 57,043 psi | 89% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,725 psi | 90% | 2890 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,682 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,985 psi | 88% | 2818 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 57,130 psi | 90% | 2894 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 56,072 psi | 88% | 2940 fps | 98.9% |
| Alliant Reloder-50 | <<locked>> | 96% | 56,536 psi | 89% | 2933 fps | 98.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 57,290 psi | 90% | 2877 fps | 99.2% |
| Bofors RP15 | <<locked>> | 86% | 57,319 psi | 90% | 2904 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 57,029 psi | 89% | 2913 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,682 psi | 90% | 2913 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 54,447 psi | 85% | 2864 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,579 psi | 87% | 2851 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 82% | 54,563 psi | 86% | 2835 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 88% | 56,971 psi | 89% | 2986 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,101 psi | 60% | 1900 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,521 psi | 87% | 2828 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 84% | 55,811 psi | 87% | 2907 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 54,375 psi | 85% | 2779 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 96% | 55,883 psi | 88% | 2910 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,898 psi | 88% | 2795 fps | 100% |
| Norma 217 | <<locked>> | 96% | 57,551 psi | 90% | 2930 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 57,392 psi | 90% | 2923 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 56,072 psi | 88% | 2854 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,117 psi | 61% | 1942 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 53,650 psi | 84% | 2904 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 57,261 psi | 90% | 2943 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 82% | 57,638 psi | 90% | 2884 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 55,854 psi | 88% | 2861 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 57,276 psi | 90% | 2881 fps | 100% |
| Vihtavuori N165 | <<locked>> | 84% | 54,288 psi | 85% | 2785 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 57,740 psi | 90% | 2871 fps | 98% |
| Vihtavuori N555 | <<locked>> | 82% | 57,551 psi | 90% | 2844 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 57,174 psi | 90% | 2930 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 86% | 55,158 psi | 86% | 2874 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 90% | 57,348 psi | 90% | 2943 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 90% | 54,868 psi | 86% | 2946 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 57,479 psi | 90% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 53,838 psi | 84% | 2792 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% | 50,241 psi | 79% | 2713 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 43,236 psi | 68% | 2664 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 80% | 52,736 psi | 83% | 2861 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 80% | 49,661 psi | 78% | 2802 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 80% | 37,115 psi | 58% | 2549 fps | 97.5% |
| ADI AR 2218 | 88.9 gr | 88% | 43,004 psi | 67% | 2749 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 34,577 psi | 54% | 2526 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 80% | 54,056 psi | 85% | 2838 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,401 psi | 79% | 2799 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,037 psi | 77% | 2720 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,178 psi | 68% | 2680 fps | 100% |
| Alliant Reloder-33 | 86.4 gr | 84% | 41,408 psi | 65% | 2674 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 90% | 45,194 psi | 71% | 2736 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,992 psi | 74% | 2707 fps | 97.3% |
| Bofors RP15 | <<locked>> | 80% | 46,818 psi | 73% | 2740 fps | 99.7% |
| Bofors RP30 | <<locked>> | 80% | 40,495 psi | 63% | 2628 fps | 98.4% |
| Bofors RP5 | <<locked>> | 80% | 50,401 psi | 79% | 2799 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 40,553 psi | 64% | 2625 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 80% | 51,924 psi | 81% | 2792 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,010 psi | 80% | 2779 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 80% | 42,467 psi | 67% | 2746 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,631 psi | 45% | 1706 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,040 psi | 82% | 2772 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 80% | 48,472 psi | 76% | 2785 fps | 99.5% |
| IMR 7977 Enduron | <<locked>> | 86% | 51,068 psi | 80% | 2723 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 80% | 32,068 psi | 50% | 2444 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 43,149 psi | 68% | 2595 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,634 psi | 51% | 2470 fps | 97.6% |
| Ramshot Grand | <<locked>> | 80% | 49,414 psi | 77% | 2805 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 80% | 44,744 psi | 70% | 2677 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,443 psi | 46% | 1745 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 42,322 psi | 66% | 2720 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 39,015 psi | 61% | 2612 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 80% | 53,882 psi | 84% | 2828 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 45,295 psi | 71% | 2684 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,534 psi | 84% | 2825 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,674 psi | 75% | 2684 fps | 100% |
| Vihtavuori N170 | <<locked>> | 84% | 47,094 psi | 74% | 2694 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 80% | 54,027 psi | 85% | 2799 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 53,447 psi | 84% | 2874 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 80% | 44,773 psi | 70% | 2697 fps | 98.7% |
| Vihtavuori N568 | <<locked>> | 80% | 39,943 psi | 63% | 2631 fps | 96.3% |
| Vihtavuori N570 | 83.1 gr | 84% | 44,106 psi | 69% | 2746 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,443 psi | 77% | 2795 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,299 psi | 79% | 2736 fps | 100% |
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 45 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 160gr | Winchester FailSafe. Hodgdon Retumbo delivers the highest muzzle velocity at 2,986 fps; across all powders the maximum-charge window runs from 1,900 fps to 2,986 fps. Accurate 8700 gives the best case fill at 100 %, and 45 of the 45 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.5 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. ADI AR 2218, Vihtavuori N570, Alliant Reloder-33 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 160gr | Winchester FailSafe 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.