Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 150gr | Berger Classic Hybrid Hunter 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% | 55,550 psi | 87% | 2861 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 51,996 psi | 81% | 2881 fps | 97.3% |
| Accurate MAGPRO | <<locked>> | 82% | 54,650 psi | 86% | 2963 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 82% | 56,333 psi | 88% | 2949 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 55,245 psi | 87% | 2963 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 92% | 54,868 psi | 86% | 2946 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 55,898 psi | 88% | 3061 fps | 98.9% |
| ADI AR 2225 | <<locked>> | 94% | 54,839 psi | 86% | 2969 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,941 psi | 88% | 2940 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 55,869 psi | 88% | 2959 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 54,244 psi | 85% | 2871 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 55,071 psi | 86% | 2940 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 53,795 psi | 84% | 2969 fps | 98.1% |
| Alliant Reloder-50 | <<locked>> | 96% | 54,288 psi | 85% | 2963 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,593 psi | 87% | 2920 fps | 98.6% |
| Bofors RP15 | <<locked>> | 86% | 55,303 psi | 87% | 2949 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 55,085 psi | 86% | 2959 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 55,869 psi | 88% | 2959 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 56,275 psi | 88% | 2963 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 57,682 psi | 90% | 2953 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,666 psi | 89% | 2940 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 88% | 54,578 psi | 86% | 3028 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,985 psi | 60% | 1955 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 57,667 psi | 90% | 2933 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 84% | 53,911 psi | 84% | 2949 fps | 99.8% |
| IMR 8133 Enduron | <<locked>> | 98% | 57,682 psi | 90% | 3009 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 54,201 psi | 85% | 2844 fps | 100% |
| Norma 217 | <<locked>> | 96% | 55,317 psi | 87% | 2969 fps | 100% |
| Norma MRP | <<locked>> | 82% | 56,028 psi | 88% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 55,245 psi | 87% | 2966 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 86% | 53,954 psi | 85% | 2897 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,957 psi | 61% | 1998 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 55,535 psi | 87% | 3009 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,027 psi | 86% | 2979 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 82% | 56,521 psi | 89% | 2920 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 82% | 55,782 psi | 87% | 2930 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 53,751 psi | 84% | 2894 fps | 97.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 55,419 psi | 87% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 55,985 psi | 88% | 2897 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 56,275 psi | 88% | 2884 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 55,999 psi | 88% | 2910 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 55,825 psi | 87% | 2900 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 55,274 psi | 87% | 2976 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 88% | 56,898 psi | 89% | 2972 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 90% | 55,274 psi | 87% | 2982 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 92% | 56,797 psi | 89% | 3045 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 84% | 55,143 psi | 86% | 2953 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,898 psi | 88% | 2894 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% | 48,544 psi | 76% | 2759 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 44,628 psi | 70% | 2749 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 80% | 50,937 psi | 80% | 2900 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 80% | 52,620 psi | 82% | 2890 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 47,877 psi | 75% | 2841 fps | 99.1% |
| ADI AR 2217 | <<locked>> | 80% | 35,708 psi | 56% | 2579 fps | 96.3% |
| ADI AR 2218 | 91.8 gr | 90% | 44,541 psi | 70% | 2841 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 80% | 33,127 psi | 52% | 2552 fps | 98.2% |
| Alliant Reloder-19 | <<locked>> | 80% | 52,373 psi | 82% | 2881 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 48,646 psi | 76% | 2841 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 47,326 psi | 74% | 2769 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,597 psi | 65% | 2720 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 42,815 psi | 67% | 2762 fps | 95% |
| Alliant Reloder-50 | <<locked>> | 92% | 46,543 psi | 73% | 2825 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,469 psi | 71% | 2743 fps | 96.3% |
| Bofors RP15 | <<locked>> | 80% | 45,194 psi | 71% | 2776 fps | 99.3% |
| Bofors RP30 | <<locked>> | 80% | 38,856 psi | 61% | 2657 fps | 97.4% |
| Bofors RP5 | <<locked>> | 80% | 48,646 psi | 76% | 2841 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 80% | 38,943 psi | 61% | 2654 fps | 98% |
| Hodgdon H4831 | <<locked>> | 80% | 50,256 psi | 79% | 2835 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,356 psi | 77% | 2818 fps | 98.9% |
| Hodgdon Retumbo | 77 gr | 80% | 40,640 psi | 64% | 2776 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,456 psi | 45% | 1755 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,734 psi | 80% | 2822 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 80% | 46,688 psi | 73% | 2825 fps | 98.9% |
| IMR 8133 Enduron | <<locked>> | 84% | 35,462 psi | 56% | 2589 fps | 96% |
| Lovex S071 | <<locked>> | 80% | 41,713 psi | 65% | 2638 fps | 99.9% |
| Norma 217 | <<locked>> | 80% | 31,053 psi | 49% | 2490 fps | 96.3% |
| Norma MRP | <<locked>> | 80% | 52,127 psi | 82% | 2910 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 47,398 psi | 74% | 2841 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 80% | 42,873 psi | 67% | 2710 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,254 psi | 46% | 1798 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 40,466 psi | 63% | 2749 fps | 99.8% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 37,333 psi | 59% | 2635 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 52,910 psi | 83% | 2864 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 80% | 52,127 psi | 82% | 2874 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 46,673 psi | 73% | 2769 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 51,779 psi | 81% | 2871 fps | 99.9% |
| Somchem S385 | <<locked>> | 80% | 52,431 psi | 82% | 2844 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 46,079 psi | 72% | 2723 fps | 99.7% |
| Vihtavuori N170 | <<locked>> | 86% | 48,791 psi | 76% | 2789 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 80% | 52,214 psi | 82% | 2848 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,488 psi | 81% | 2913 fps | 99.3% |
| Vihtavuori N565 | <<locked>> | 80% | 43,207 psi | 68% | 2733 fps | 97.9% |
| Vihtavuori N568 | <<locked>> | 82% | 41,133 psi | 64% | 2720 fps | 96.1% |
| Vihtavuori N570 | 85.9 gr | 86% | 45,542 psi | 71% | 2841 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 47,384 psi | 74% | 2841 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,617 psi | 76% | 2779 fps | 99.7% |
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 | 150gr | Berger Classic Hybrid Hunter. ADI AR 2218 delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,955 fps to 3,061 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 60–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:11.0 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 | 150gr | Berger Classic Hybrid Hunter 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.