Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 139gr | Reichenberg HDB Universal bullet and 49 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% | 56,927 psi | 89% | 2966 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 57,145 psi | 90% | 3074 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 84% | 57,682 psi | 90% | 3054 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 56,608 psi | 89% | 3068 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 94% | 55,985 psi | 88% | 3045 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 98% | 57,000 psi | 89% | 3156 fps | 98.5% |
| ADI AR 2225 | <<locked>> | 96% | 55,564 psi | 87% | 3061 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 57,174 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 57,130 psi | 90% | 3061 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 55,288 psi | 87% | 2972 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 55,898 psi | 88% | 3041 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 55,970 psi | 88% | 3051 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 54,868 psi | 86% | 3064 fps | 97.8% |
| Alliant Reloder-50 | <<locked>> | 98% | 55,172 psi | 86% | 3051 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 57,087 psi | 89% | 3022 fps | 98.3% |
| Bofors RP15 | <<locked>> | 88% | 56,536 psi | 89% | 3054 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 55,883 psi | 88% | 3054 fps | 99.9% |
| Bofors RP5 | <<locked>> | 86% | 57,130 psi | 90% | 3061 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 57,435 psi | 90% | 3064 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 55,172 psi | 86% | 2999 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 84% | 54,215 psi | 85% | 2979 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 57,638 psi | 90% | 2959 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 55,390 psi | 87% | 3127 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,782 psi | 59% | 2021 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 55,477 psi | 87% | 2976 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 86% | 54,955 psi | 86% | 3048 fps | 99.6% |
| IMR 8133 Enduron | <<locked>> | 98% | 54,433 psi | 85% | 3038 fps | 99.7% |
| Lovex S071 | <<locked>> | 90% | 55,158 psi | 86% | 2943 fps | 100% |
| Norma 217 | <<locked>> | 98% | 55,985 psi | 88% | 3068 fps | 100% |
| Norma MRP | <<locked>> | 84% | 57,188 psi | 90% | 3074 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 56,333 psi | 88% | 3068 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 88% | 55,216 psi | 87% | 2995 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,725 psi | 61% | 2064 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 56,652 psi | 89% | 3110 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 55,941 psi | 88% | 3071 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 82% | 54,259 psi | 85% | 2966 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 84% | 57,029 psi | 89% | 3035 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 56,666 psi | 89% | 3031 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 55,724 psi | 87% | 2949 fps | 99.3% |
| Somchem S385 | <<locked>> | 84% | 57,406 psi | 90% | 3002 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 57,667 psi | 90% | 2986 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 57,377 psi | 90% | 3005 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 84% | 56,942 psi | 89% | 3002 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 56,492 psi | 89% | 3077 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 88% | 54,244 psi | 85% | 3012 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 92% | 56,144 psi | 88% | 3074 fps | 99% |
| Vihtavuori N570 | <<locked>> | 92% | 53,693 psi | 84% | 3071 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 55,854 psi | 88% | 3054 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 57,348 psi | 90% | 2995 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% | 46,282 psi | 73% | 2802 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 45,861 psi | 72% | 2874 fps | 96.5% |
| ADI AR 2209 | <<locked>> | 80% | 50,314 psi | 79% | 2936 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 80% | 45,527 psi | 71% | 2874 fps | 98.1% |
| ADI AR 2217 | <<locked>> | 82% | 36,477 psi | 57% | 2667 fps | 95.7% |
| ADI AR 2218 | 94.2 gr | 92% | 45,397 psi | 71% | 2927 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 80% | 31,299 psi | 49% | 2569 fps | 96.6% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,140 psi | 79% | 2927 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 46,340 psi | 73% | 2881 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,005 psi | 71% | 2815 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 39,276 psi | 62% | 2756 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 51,982 psi | 81% | 2989 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 46,949 psi | 74% | 2920 fps | 95.7% |
| Alliant Reloder-50 | <<locked>> | 94% | 47,224 psi | 74% | 2907 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 46,702 psi | 73% | 2838 fps | 95.9% |
| Bofors RP15 | <<locked>> | 80% | 43,163 psi | 68% | 2815 fps | 98.4% |
| Bofors RP30 | <<locked>> | 80% | 36,680 psi | 57% | 2680 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 46,340 psi | 73% | 2881 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 80% | 36,912 psi | 58% | 2680 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 80% | 48,022 psi | 75% | 2874 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,166 psi | 74% | 2858 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 54,056 psi | 85% | 2913 fps | 100% |
| Hodgdon Retumbo | 77.3 gr | 80% | 38,305 psi | 60% | 2795 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,311 psi | 44% | 1814 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,747 psi | 76% | 2864 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 80% | 44,295 psi | 69% | 2854 fps | 97.8% |
| IMR 8133 Enduron | <<locked>> | 86% | 35,781 psi | 56% | 2671 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 39,726 psi | 62% | 2677 fps | 99.4% |
| Norma 217 | <<locked>> | 82% | 31,270 psi | 49% | 2569 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 49,545 psi | 78% | 2953 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 44,889 psi | 70% | 2871 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 80% | 40,480 psi | 63% | 2740 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,066 psi | 46% | 1857 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 37,956 psi | 59% | 2769 fps | 99% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 41,017 psi | 64% | 2792 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 50,792 psi | 80% | 2907 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 80% | 49,792 psi | 78% | 2917 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 49,443 psi | 77% | 2913 fps | 99.5% |
| Somchem S361 | <<locked>> | 80% | 52,112 psi | 82% | 2890 fps | 98.9% |
| Somchem S385 | <<locked>> | 80% | 50,212 psi | 79% | 2890 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 43,990 psi | 69% | 2762 fps | 99.1% |
| Vihtavuori N170 | <<locked>> | 90% | 53,577 psi | 84% | 2943 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 80% | 49,792 psi | 78% | 2897 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 49,023 psi | 77% | 2949 fps | 98.4% |
| Vihtavuori N565 | <<locked>> | 80% | 40,988 psi | 64% | 2759 fps | 96.6% |
| Vihtavuori N568 | <<locked>> | 84% | 41,887 psi | 66% | 2808 fps | 95.5% |
| Vihtavuori N570 | 90.3 gr | 90% | 49,864 psi | 78% | 3002 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 44,324 psi | 69% | 2877 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,412 psi | 73% | 2818 fps | 99.1% |
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 49 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 139gr | Reichenberg HDB Universal. ADI AR 2218 delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 2,021 fps to 3,156 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 49 of the 49 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 139.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. 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 | 139gr | Reichenberg HDB Universal 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.