Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 130gr | Speer Boat-Tail 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 N568.
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% | 55,956 psi | 88% | 3022 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 54,984 psi | 86% | 3117 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 84% | 56,811 psi | 89% | 3114 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 86% | 55,550 psi | 87% | 3120 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 94% | 55,013 psi | 86% | 3097 fps | 99.7% |
| ADI AR 2218 | <<locked>> | 98% | 56,173 psi | 88% | 3202 fps | 97.9% |
| ADI AR 2225 | <<locked>> | 96% | 54,375 psi | 85% | 3114 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 56,362 psi | 88% | 3100 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 86% | 56,130 psi | 88% | 3120 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 86% | 54,201 psi | 85% | 3031 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 54,911 psi | 86% | 3097 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 54,984 psi | 86% | 3107 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 53,882 psi | 84% | 3110 fps | 97.1% |
| Alliant Reloder-50 | <<locked>> | 98% | 54,186 psi | 85% | 3094 fps | 96.7% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 56,333 psi | 88% | 3074 fps | 97.8% |
| Bofors RP15 | <<locked>> | 88% | 55,550 psi | 87% | 3107 fps | 99.8% |
| Bofors RP30 | <<locked>> | 92% | 54,998 psi | 86% | 3107 fps | 99.6% |
| Bofors RP5 | <<locked>> | 86% | 56,130 psi | 88% | 3120 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 92% | 56,449 psi | 88% | 3117 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 84% | 54,476 psi | 85% | 3051 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 57,217 psi | 90% | 3097 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 56,797 psi | 89% | 3022 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 54,172 psi | 85% | 3179 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,695 psi | 59% | 2083 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 54,737 psi | 86% | 3035 fps | 99% |
| IMR 7828 SSC | <<locked>> | 86% | 54,114 psi | 85% | 3104 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 57,334 psi | 90% | 3150 fps | 99.8% |
| Lovex S071 | <<locked>> | 90% | 54,230 psi | 85% | 2999 fps | 100% |
| Norma 217 | <<locked>> | 98% | 54,766 psi | 86% | 3114 fps | 100% |
| Norma MRP | <<locked>> | 84% | 56,289 psi | 88% | 3130 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 55,303 psi | 87% | 3120 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 88% | 54,259 psi | 85% | 3048 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,595 psi | 60% | 2129 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 55,579 psi | 87% | 3163 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 55,013 psi | 86% | 3120 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 84% | 57,000 psi | 89% | 3077 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 84% | 56,188 psi | 88% | 3091 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 55,811 psi | 87% | 3091 fps | 99.9% |
| Somchem S361 | <<locked>> | 82% | 55,013 psi | 86% | 3005 fps | 99% |
| Somchem S385 | <<locked>> | 84% | 56,536 psi | 89% | 3058 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 56,855 psi | 89% | 3045 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 56,434 psi | 88% | 3051 fps | 96.1% |
| Vihtavuori N555 | <<locked>> | 84% | 55,912 psi | 88% | 3064 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 55,593 psi | 87% | 3130 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 90% | 57,072 psi | 89% | 3123 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 92% | 55,172 psi | 86% | 3123 fps | 98.5% |
| Vihtavuori N570 | <<locked>> | 94% | 56,739 psi | 89% | 3189 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 86% | 54,752 psi | 86% | 3110 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 56,550 psi | 89% | 3054 fps | 99.9% |
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% | 45,498 psi | 71% | 2851 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 80% | 47,485 psi | 74% | 2979 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 80% | 49,545 psi | 78% | 2992 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 44,701 psi | 70% | 2923 fps | 97.4% |
| ADI AR 2217 | <<locked>> | 84% | 38,348 psi | 60% | 2769 fps | 95.8% |
| ADI AR 2218 | 98.6 gr | 94% | 48,153 psi | 75% | 3045 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 30,705 psi | 48% | 2602 fps | 95.4% |
| Alliant Reloder-19 | <<locked>> | 80% | 49,356 psi | 77% | 2979 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 45,484 psi | 71% | 2927 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 44,237 psi | 69% | 2871 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 38,493 psi | 60% | 2799 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 50,952 psi | 80% | 3045 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 49,908 psi | 78% | 3038 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 96% | 50,009 psi | 78% | 3022 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 45,963 psi | 72% | 2887 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 42,279 psi | 66% | 2861 fps | 97.8% |
| Bofors RP30 | <<locked>> | 82% | 38,522 psi | 60% | 2785 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 45,484 psi | 71% | 2927 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 80% | 36,230 psi | 57% | 2720 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 80% | 47,195 psi | 74% | 2923 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,383 psi | 73% | 2907 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 53,156 psi | 83% | 2972 fps | 100% |
| Hodgdon Retumbo | 79.2 gr | 80% | 37,492 psi | 59% | 2835 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,195 psi | 44% | 1873 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,066 psi | 75% | 2917 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 80% | 43,439 psi | 68% | 2904 fps | 97.1% |
| IMR 8133 Enduron | <<locked>> | 88% | 37,637 psi | 59% | 2769 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 39,015 psi | 61% | 2723 fps | 99% |
| Norma 217 | <<locked>> | 84% | 32,953 psi | 52% | 2667 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 48,675 psi | 76% | 3005 fps | 99.8% |
| Ramshot Grand | <<locked>> | 80% | 43,859 psi | 69% | 2913 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 80% | 39,639 psi | 62% | 2782 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,051 psi | 46% | 1923 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 37,289 psi | 58% | 2808 fps | 98.4% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 43,540 psi | 68% | 2904 fps | 96.2% |
| Rottweil R 904 | <<locked>> | 80% | 50,067 psi | 78% | 2963 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 80% | 49,023 psi | 77% | 2972 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 48,675 psi | 76% | 2969 fps | 99.2% |
| Somchem S361 | <<locked>> | 80% | 51,387 psi | 81% | 2946 fps | 98.4% |
| Somchem S385 | <<locked>> | 80% | 49,385 psi | 77% | 2943 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 80% | 43,265 psi | 68% | 2812 fps | 98.6% |
| Vihtavuori N170 | <<locked>> | 90% | 52,721 psi | 83% | 2989 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 48,834 psi | 77% | 2953 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 48,182 psi | 76% | 2999 fps | 97.8% |
| Vihtavuori N565 | <<locked>> | 80% | 40,132 psi | 63% | 2799 fps | 95.7% |
| Vihtavuori N568 | 88.8 gr | 86% | 44,193 psi | 69% | 2917 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 90% | 48,878 psi | 77% | 3045 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 43,192 psi | 68% | 2923 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 45,759 psi | 72% | 2871 fps | 98.7% |
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 57 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 130gr | Speer Boat-Tail. ADI AR 2218 delivers the highest muzzle velocity at 3,202 fps; across all powders the maximum-charge window runs from 2,083 fps to 3,202 fps. Accurate 8700 gives the best case fill at 100 %, and 57 of the 57 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 130.0 gr projectile in 0.284" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, Hodgdon US 869 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 N568 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 130gr | Speer Boat-Tail they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon US 869, IMR 7977 Enduron, Lovex D100 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.