Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 145gr | Speer Hot-Cor bullet and 48 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% | 55,361 psi | 87% | 2897 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 2904 fps | 97% |
| Accurate MAGPRO | <<locked>> | 82% | 54,346 psi | 85% | 2989 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 82% | 55,999 psi | 88% | 2982 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 55,013 psi | 86% | 2992 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 92% | 54,650 psi | 86% | 2976 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 96% | 55,593 psi | 87% | 3084 fps | 98.6% |
| ADI AR 2225 | <<locked>> | 94% | 54,476 psi | 85% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,579 psi | 87% | 2966 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 55,651 psi | 87% | 2989 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 57,551 psi | 90% | 2953 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 54,737 psi | 86% | 2969 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 53,548 psi | 84% | 2995 fps | 97.9% |
| Alliant Reloder-50 | <<locked>> | 96% | 53,911 psi | 84% | 2986 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,463 psi | 87% | 2949 fps | 98.4% |
| Bofors RP15 | <<locked>> | 86% | 55,071 psi | 86% | 2982 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 54,723 psi | 86% | 2986 fps | 99.9% |
| Bofors RP5 | <<locked>> | 84% | 55,651 psi | 87% | 2989 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 56,028 psi | 88% | 2992 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 57,450 psi | 90% | 2982 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,463 psi | 88% | 2969 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 88% | 54,186 psi | 85% | 3058 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,942 psi | 59% | 1988 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 57,319 psi | 90% | 2959 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 86% | 57,537 psi | 90% | 3038 fps | 99.9% |
| IMR 8133 Enduron | <<locked>> | 98% | 57,334 psi | 90% | 3035 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 57,305 psi | 90% | 2923 fps | 100% |
| Norma 217 | <<locked>> | 96% | 54,940 psi | 86% | 2999 fps | 100% |
| Norma MRP | <<locked>> | 82% | 55,738 psi | 87% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 54,897 psi | 86% | 2999 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 86% | 53,534 psi | 84% | 2923 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,899 psi | 61% | 2031 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 55,376 psi | 87% | 3038 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 54,592 psi | 86% | 3002 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 82% | 56,217 psi | 88% | 2949 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 82% | 55,434 psi | 87% | 2963 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 53,417 psi | 84% | 2917 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 55,071 psi | 86% | 2956 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 55,811 psi | 87% | 2930 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 55,999 psi | 88% | 2917 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 55,724 psi | 87% | 2936 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 55,506 psi | 87% | 2930 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 55,013 psi | 86% | 3002 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 88% | 56,695 psi | 89% | 3002 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 90% | 54,940 psi | 86% | 3005 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 92% | 56,376 psi | 88% | 3068 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 84% | 54,752 psi | 86% | 2982 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,622 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% | 48,283 psi | 76% | 2785 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 47,848 psi | 75% | 2838 fps | 96% |
| Accurate MAGPRO | <<locked>> | 80% | 50,676 psi | 79% | 2927 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 80% | 52,359 psi | 82% | 2923 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 47,572 psi | 75% | 2864 fps | 98.8% |
| ADI AR 2217 | <<locked>> | 80% | 35,462 psi | 56% | 2598 fps | 95.8% |
| ADI AR 2218 | 93.2 gr | 90% | 44,251 psi | 69% | 2861 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 80% | 32,895 psi | 52% | 2572 fps | 97.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 52,098 psi | 82% | 2913 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 48,356 psi | 76% | 2871 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 47,094 psi | 74% | 2799 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,321 psi | 65% | 2746 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 45,963 psi | 72% | 2858 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 92% | 46,282 psi | 73% | 2844 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,324 psi | 71% | 2772 fps | 96% |
| Bofors RP15 | <<locked>> | 80% | 44,962 psi | 70% | 2805 fps | 99.1% |
| Bofors RP30 | <<locked>> | 80% | 38,580 psi | 60% | 2680 fps | 97% |
| Bofors RP5 | <<locked>> | 80% | 48,356 psi | 76% | 2871 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 38,667 psi | 61% | 2680 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 80% | 49,937 psi | 78% | 2864 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,066 psi | 77% | 2848 fps | 98.7% |
| Hodgdon Retumbo | 78.2 gr | 80% | 40,321 psi | 63% | 2799 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,427 psi | 45% | 1785 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,488 psi | 79% | 2848 fps | 99% |
| IMR 7828 SSC | <<locked>> | 80% | 46,383 psi | 73% | 2848 fps | 98.6% |
| IMR 8133 Enduron | <<locked>> | 84% | 35,157 psi | 55% | 2608 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 41,539 psi | 65% | 2664 fps | 99.8% |
| Norma 217 | <<locked>> | 80% | 30,806 psi | 48% | 2510 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 51,938 psi | 81% | 2943 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 47,166 psi | 74% | 2867 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 80% | 42,670 psi | 67% | 2736 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,196 psi | 46% | 1827 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 40,190 psi | 63% | 2772 fps | 99.7% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 40,103 psi | 63% | 2726 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 52,692 psi | 83% | 2894 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 80% | 51,866 psi | 81% | 2907 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 46,499 psi | 73% | 2795 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 51,517 psi | 81% | 2900 fps | 99.9% |
| Somchem S385 | <<locked>> | 80% | 52,170 psi | 82% | 2874 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,818 psi | 72% | 2753 fps | 99.6% |
| Vihtavuori N170 | <<locked>> | 86% | 48,486 psi | 76% | 2808 fps | 95% |
| Vihtavuori N555 | <<locked>> | 80% | 51,938 psi | 81% | 2881 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,314 psi | 80% | 2940 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 80% | 42,902 psi | 67% | 2756 fps | 97.6% |
| Vihtavuori N568 | <<locked>> | 82% | 40,901 psi | 64% | 2743 fps | 95.7% |
| Vihtavuori N570 | 87.2 gr | 86% | 45,165 psi | 71% | 2864 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 46,905 psi | 74% | 2867 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,486 psi | 76% | 2812 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 48 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 145gr | Speer Hot-Cor. 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 48 of the 48 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 | Speer Hot-Cor 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.