Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 140gr | Barnes Solid 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 ReloadSwiss RS 80.
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% | 55,637 psi | 87% | 2943 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 54,534 psi | 85% | 3035 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 84% | 56,318 psi | 88% | 3025 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 86% | 55,114 psi | 86% | 3038 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 94% | 54,389 psi | 85% | 3015 fps | 99.8% |
| ADI AR 2218 | <<locked>> | 98% | 55,361 psi | 87% | 3120 fps | 98.1% |
| ADI AR 2225 | <<locked>> | 96% | 53,751 psi | 84% | 3035 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 56,695 psi | 89% | 3025 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 56,101 psi | 88% | 3018 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 86% | 55,651 psi | 87% | 3035 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 57,508 psi | 90% | 2995 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 54,404 psi | 85% | 3015 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 54,549 psi | 85% | 3025 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 57,421 psi | 90% | 3100 fps | 98.2% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 57,450 psi | 90% | 3087 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 55,825 psi | 87% | 2995 fps | 98% |
| Bofors RP15 | <<locked>> | 88% | 55,085 psi | 86% | 3025 fps | 99.9% |
| Bofors RP30 | <<locked>> | 92% | 54,476 psi | 85% | 3028 fps | 99.7% |
| Bofors RP5 | <<locked>> | 86% | 55,651 psi | 87% | 3035 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 55,738 psi | 87% | 3031 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 53,954 psi | 85% | 2966 fps | 99.1% |
| Hodgdon H4831 SC | <<locked>> | 86% | 56,753 psi | 89% | 3012 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 56,579 psi | 89% | 2940 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 57,595 psi | 90% | 3156 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,695 psi | 59% | 2005 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 54,288 psi | 85% | 2953 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 88% | 57,609 psi | 90% | 3084 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 56,594 psi | 89% | 3071 fps | 99.9% |
| Lovex S071 | <<locked>> | 92% | 57,479 psi | 90% | 2969 fps | 100% |
| Norma 217 | <<locked>> | 98% | 54,143 psi | 85% | 3035 fps | 100% |
| Norma MRP | <<locked>> | 84% | 55,854 psi | 88% | 3048 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 54,955 psi | 86% | 3041 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 88% | 53,621 psi | 84% | 2966 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,653 psi | 61% | 2047 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 54,679 psi | 86% | 3081 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 54,259 psi | 85% | 3041 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 84% | 56,855 psi | 89% | 2999 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 84% | 55,883 psi | 88% | 3009 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 55,506 psi | 87% | 3005 fps | 99.9% |
| Somchem S361 | <<locked>> | 82% | 54,650 psi | 86% | 2923 fps | 99.2% |
| Somchem S385 | <<locked>> | 84% | 56,144 psi | 88% | 2976 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 56,275 psi | 88% | 2959 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 55,898 psi | 88% | 2972 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 84% | 55,477 psi | 87% | 2976 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 55,201 psi | 87% | 3051 fps | 99.3% |
| Vihtavuori N565 | <<locked>> | 90% | 56,608 psi | 89% | 3041 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 92% | 54,607 psi | 86% | 3045 fps | 98.7% |
| Vihtavuori N570 | <<locked>> | 94% | 56,028 psi | 88% | 3107 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 54,273 psi | 85% | 3031 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 56,159 psi | 88% | 2972 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% | 45,136 psi | 71% | 2772 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 47,282 psi | 74% | 2907 fps | 97.5% |
| ADI AR 2209 | <<locked>> | 80% | 49,153 psi | 77% | 2910 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 80% | 44,411 psi | 70% | 2848 fps | 97.8% |
| ADI AR 2217 | <<locked>> | 82% | 35,578 psi | 56% | 2638 fps | 95.2% |
| ADI AR 2218 | 93.9 gr | 94% | 47,529 psi | 74% | 2966 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 80% | 30,458 psi | 48% | 2539 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 49,501 psi | 78% | 2907 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 80% | 49,037 psi | 77% | 2900 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 45,194 psi | 71% | 2851 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,961 psi | 69% | 2792 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 38,159 psi | 60% | 2726 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 50,560 psi | 79% | 2963 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 45,571 psi | 71% | 2890 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 96% | 49,327 psi | 77% | 2946 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 45,730 psi | 72% | 2815 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 42,061 psi | 66% | 2785 fps | 98.1% |
| Bofors RP30 | <<locked>> | 80% | 35,636 psi | 56% | 2651 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 45,194 psi | 71% | 2851 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 80% | 36,114 psi | 57% | 2654 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 80% | 46,963 psi | 74% | 2848 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,108 psi | 72% | 2831 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,968 psi | 83% | 2890 fps | 100% |
| Hodgdon Retumbo | 75.4 gr | 80% | 37,217 psi | 58% | 2766 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,311 psi | 44% | 1801 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,747 psi | 75% | 2838 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 80% | 43,294 psi | 68% | 2831 fps | 97.5% |
| IMR 8133 Enduron | <<locked>> | 88% | 37,173 psi | 58% | 2700 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 38,769 psi | 61% | 2648 fps | 99.2% |
| Norma 217 | <<locked>> | 84% | 32,648 psi | 51% | 2605 fps | 96.3% |
| Norma MRP | <<locked>> | 80% | 48,370 psi | 76% | 2927 fps | 99.9% |
| Ramshot Grand | <<locked>> | 80% | 43,497 psi | 68% | 2838 fps | 98% |
| Ramshot Magnum | <<locked>> | 80% | 39,436 psi | 62% | 2713 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,066 psi | 46% | 1844 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 36,840 psi | 58% | 2740 fps | 98.7% |
| ReloadSwiss RS 80 | 85.5 gr | 84% | 39,769 psi | 62% | 2762 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 49,850 psi | 78% | 2884 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 80% | 48,820 psi | 77% | 2894 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 48,472 psi | 76% | 2887 fps | 99.4% |
| Somchem S361 | <<locked>> | 80% | 51,068 psi | 80% | 2867 fps | 98.7% |
| Somchem S385 | <<locked>> | 80% | 49,095 psi | 77% | 2864 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 80% | 42,960 psi | 67% | 2736 fps | 98.9% |
| Vihtavuori N170 | <<locked>> | 90% | 52,257 psi | 82% | 2913 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 80% | 48,689 psi | 76% | 2874 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 47,906 psi | 75% | 2923 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 80% | 39,929 psi | 63% | 2733 fps | 96.2% |
| Vihtavuori N568 | <<locked>> | 84% | 40,611 psi | 64% | 2779 fps | 95% |
| Vihtavuori N570 | <<locked>> | 90% | 48,327 psi | 76% | 2969 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 42,917 psi | 67% | 2851 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 45,382 psi | 71% | 2792 fps | 98.9% |
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 | Barnes Solid. Hodgdon Retumbo delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 2,005 fps to 3,156 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 140.0 gr projectile in 0.284" calls for a 1:9.5 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, ReloadSwiss RS 80 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 140gr | Barnes Solid 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.