Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 125gr | Hasler ARIETE bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Hodgdon Retumbo and ReloadSwiss RS 76.
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>> | 88% | 54,694 psi | 86% | 3051 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 54,012 psi | 85% | 3146 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 86% | 56,086 psi | 88% | 3150 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 88% | 54,694 psi | 86% | 3153 fps | 99% |
| ADI AR 2217 | <<locked>> | 98% | 57,696 psi | 90% | 3182 fps | 99.7% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 54,824 psi | 86% | 3215 fps | 96.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 3202 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,391 psi | 88% | 3146 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 82% | 55,927 psi | 88% | 3150 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 55,782 psi | 87% | 3136 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 55,071 psi | 86% | 3150 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 90% | 56,710 psi | 89% | 3117 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,392 psi | 90% | 3186 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 53,548 psi | 84% | 3136 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 56,463 psi | 88% | 3199 fps | 97.2% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 55,927 psi | 88% | 3107 fps | 97.2% |
| Bofors RP15 | <<locked>> | 90% | 54,447 psi | 85% | 3136 fps | 99.6% |
| Bofors RP30 | <<locked>> | 96% | 57,217 psi | 90% | 3189 fps | 99.6% |
| Bofors RP5 | <<locked>> | 88% | 55,071 psi | 86% | 3150 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 94% | 55,143 psi | 86% | 3143 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 86% | 53,780 psi | 84% | 3084 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 56,637 psi | 89% | 3130 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 56,217 psi | 88% | 3064 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 56,463 psi | 88% | 3268 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,289 psi | 58% | 2103 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 54,752 psi | 86% | 3074 fps | 99.9% |
| IMR 4831 | <<locked>> | 82% | 55,172 psi | 86% | 3077 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 54,259 psi | 85% | 3071 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 90% | 57,043 psi | 89% | 3196 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 51,590 psi | 81% | 3104 fps | 98.9% |
| Lovex S070 | <<locked>> | 82% | 56,623 psi | 89% | 3104 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 56,318 psi | 88% | 3074 fps | 100% |
| Norma 204 | <<locked>> | 82% | 55,970 psi | 88% | 3127 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 52,533 psi | 82% | 3130 fps | 99.9% |
| Norma MRP | <<locked>> | 86% | 55,245 psi | 87% | 3166 fps | 100% |
| Norma URP | <<locked>> | 82% | 56,681 psi | 89% | 3123 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 54,012 psi | 85% | 3150 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 82% | 55,898 psi | 88% | 3123 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 57,246 psi | 90% | 3140 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,130 psi | 60% | 2149 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 53,621 psi | 84% | 3186 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 57,624 psi | 90% | 3209 fps | 99% |
| Rottweil R 904 | <<locked>> | 86% | 56,652 psi | 89% | 3117 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 86% | 55,434 psi | 87% | 3127 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 82% | 56,623 psi | 89% | 3104 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 57,217 psi | 90% | 3054 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 55,042 psi | 86% | 3123 fps | 99.6% |
| Somchem S361 | <<locked>> | 84% | 54,679 psi | 86% | 3041 fps | 98.6% |
| Somchem S365 | <<locked>> | 82% | 54,447 psi | 85% | 3071 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 55,796 psi | 87% | 3094 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 90% | 55,912 psi | 88% | 3074 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 82% | 57,725 psi | 90% | 3117 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 54,621 psi | 86% | 3094 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 54,752 psi | 86% | 3163 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 92% | 55,680 psi | 87% | 3146 fps | 99% |
| Vihtavuori N568 | <<locked>> | 94% | 53,577 psi | 84% | 3143 fps | 97.8% |
| Vihtavuori N570 | <<locked>> | 96% | 54,868 psi | 86% | 3202 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 57,116 psi | 90% | 3199 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 55,883 psi | 88% | 3087 fps | 99.7% |
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% | 41,118 psi | 64% | 2812 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 80% | 43,047 psi | 67% | 2933 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 45,527 psi | 71% | 2959 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 80% | 40,741 psi | 64% | 2881 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 88% | 40,103 psi | 63% | 2851 fps | 95.9% |
| ADI AR 2218 | <<locked>> | 98% | 50,560 psi | 79% | 3133 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 84% | 31,618 psi | 50% | 2667 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 45,890 psi | 72% | 2956 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 52,286 psi | 82% | 3094 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,469 psi | 71% | 2949 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 41,379 psi | 65% | 2887 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,943 psi | 63% | 2838 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,519 psi | 54% | 2749 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 45,658 psi | 72% | 3002 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 52,054 psi | 82% | 3120 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 48,718 psi | 76% | 2982 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 38,290 psi | 60% | 2815 fps | 95.9% |
| Bofors RP30 | <<locked>> | 86% | 39,929 psi | 63% | 2861 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 41,379 psi | 65% | 2887 fps | 97.1% |
| Hodgdon H1000 | <<locked>> | 84% | 38,029 psi | 60% | 2805 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 80% | 43,395 psi | 68% | 2887 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,598 psi | 67% | 2874 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 49,008 psi | 77% | 2959 fps | 100% |
| Hodgdon Retumbo | 78.6 gr | 82% | 36,187 psi | 57% | 2841 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,920 psi | 44% | 1896 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 51,227 psi | 80% | 3015 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 51,517 psi | 81% | 3022 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,570 psi | 70% | 2890 fps | 96.4% |
| IMR 7828 SSC | <<locked>> | 80% | 39,363 psi | 62% | 2858 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 92% | 38,464 psi | 60% | 2835 fps | 95.1% |
| Lovex S070 | <<locked>> | 80% | 52,997 psi | 83% | 3045 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 34,998 psi | 55% | 2674 fps | 97.5% |
| Norma 204 | <<locked>> | 80% | 52,257 psi | 82% | 3064 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 33,388 psi | 52% | 2726 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 44,063 psi | 69% | 2963 fps | 98.9% |
| Norma URP | <<locked>> | 80% | 52,910 psi | 83% | 3068 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 39,320 psi | 62% | 2861 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 52,272 psi | 82% | 3064 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 35,389 psi | 55% | 2726 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,587 psi | 45% | 1939 fps | 100% |
| ReloadSwiss RS 76 | 82.1 gr | 80% | 33,127 psi | 52% | 2740 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 45,208 psi | 71% | 2982 fps | 96.2% |
| Rottweil R 904 | <<locked>> | 80% | 46,325 psi | 73% | 2936 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 80% | 44,875 psi | 70% | 2936 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 80% | 52,997 psi | 83% | 3045 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 53,505 psi | 84% | 2999 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,527 psi | 70% | 2930 fps | 98% |
| Somchem S361 | <<locked>> | 80% | 47,456 psi | 74% | 2913 fps | 97.1% |
| Somchem S365 | <<locked>> | 80% | 50,720 psi | 79% | 3015 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 45,324 psi | 71% | 2910 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 80% | 39,479 psi | 62% | 2776 fps | 97.2% |
| Vihtavuori N550 | <<locked>> | 80% | 53,824 psi | 84% | 3061 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 44,396 psi | 70% | 2923 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,830 psi | 69% | 2953 fps | 96% |
| Vihtavuori N565 | <<locked>> | 84% | 41,742 psi | 65% | 2881 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 90% | 46,021 psi | 72% | 2999 fps | 95.8% |
| Vihtavuori N570 | 93.5 gr | 94% | 50,792 psi | 80% | 3127 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 37,985 psi | 60% | 2874 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,771 psi | 65% | 2835 fps | 97.3% |
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 59 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 125gr | Hasler ARIETE. Hodgdon Retumbo delivers the highest muzzle velocity at 3,268 fps; across all powders the maximum-charge window runs from 2,103 fps to 3,268 fps. ADI AR 2218 gives the best case fill at 100 %, and 59 of the 59 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Hodgdon TrailBoss 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 125gr | Hasler ARIETE 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.