Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 140gr | Barnes X S 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 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% | 56,768 psi | 89% | 2946 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 51,967 psi | 81% | 2943 fps | 96.6% |
| Accurate MAGPRO | <<locked>> | 82% | 55,201 psi | 87% | 3038 fps | 99% |
| ADI AR 2209 | <<locked>> | 82% | 56,202 psi | 88% | 3015 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 55,143 psi | 86% | 3031 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 92% | 54,752 psi | 86% | 3012 fps | 99.8% |
| ADI AR 2218 | <<locked>> | 96% | 55,811 psi | 87% | 3120 fps | 98.2% |
| ADI AR 2225 | <<locked>> | 94% | 54,607 psi | 86% | 3038 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,666 psi | 89% | 3015 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,666 psi | 89% | 3015 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 56,144 psi | 88% | 3009 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,101 psi | 88% | 3035 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 54,549 psi | 85% | 2949 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 55,143 psi | 86% | 3015 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,099 psi | 85% | 3038 fps | 97.6% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,100 psi | 86% | 3041 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,434 psi | 87% | 2979 fps | 98% |
| Bofors RP15 | <<locked>> | 86% | 55,695 psi | 87% | 3025 fps | 99.9% |
| Bofors RP30 | <<locked>> | 90% | 55,361 psi | 87% | 3031 fps | 99.8% |
| Bofors RP5 | <<locked>> | 84% | 56,101 psi | 88% | 3035 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 56,072 psi | 88% | 3031 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 57,653 psi | 90% | 3018 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,681 psi | 89% | 3002 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 88% | 54,346 psi | 85% | 3100 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,043 psi | 60% | 2008 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 57,580 psi | 90% | 2995 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 86% | 57,609 psi | 90% | 3074 fps | 99.8% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,346 psi | 85% | 3025 fps | 99.7% |
| Lovex S071 | <<locked>> | 88% | 55,245 psi | 87% | 2923 fps | 100% |
| Norma 217 | <<locked>> | 96% | 55,579 psi | 87% | 3048 fps | 100% |
| Norma MRP | <<locked>> | 82% | 56,260 psi | 88% | 3048 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 55,201 psi | 87% | 3038 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 86% | 54,317 psi | 85% | 2969 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,073 psi | 61% | 2054 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 55,550 psi | 87% | 3081 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,390 psi | 87% | 3051 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 82% | 56,637 psi | 89% | 2989 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 82% | 56,144 psi | 88% | 3005 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,244 psi | 85% | 2963 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 55,767 psi | 87% | 2999 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 56,637 psi | 89% | 2972 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 56,666 psi | 89% | 2956 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,594 psi | 89% | 2979 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 82% | 56,536 psi | 89% | 2982 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 55,390 psi | 87% | 3045 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 88% | 57,537 psi | 90% | 3048 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 90% | 55,463 psi | 87% | 3051 fps | 98.9% |
| Vihtavuori N570 | <<locked>> | 92% | 56,768 psi | 89% | 3114 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 55,521 psi | 87% | 3038 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,260 psi | 88% | 2963 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% | 49,908 psi | 78% | 2844 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 48,544 psi | 76% | 2881 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 80% | 51,605 psi | 81% | 2976 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 80% | 52,779 psi | 83% | 2963 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 80% | 48,167 psi | 75% | 2910 fps | 98.7% |
| ADI AR 2217 | <<locked>> | 80% | 36,593 psi | 57% | 2654 fps | 95.8% |
| ADI AR 2218 | 92.8 gr | 92% | 48,225 psi | 76% | 2976 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 34,316 psi | 54% | 2638 fps | 98.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 53,156 psi | 83% | 2959 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 53,156 psi | 83% | 2959 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 52,663 psi | 83% | 2953 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,269 psi | 77% | 2917 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,008 psi | 75% | 2851 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,250 psi | 66% | 2802 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 46,818 psi | 73% | 2907 fps | 95.7% |
| Alliant Reloder-50 | <<locked>> | 92% | 47,805 psi | 75% | 2913 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,716 psi | 72% | 2808 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 45,919 psi | 72% | 2854 fps | 99% |
| Bofors RP30 | <<locked>> | 80% | 39,987 psi | 63% | 2746 fps | 97.1% |
| Bofors RP5 | <<locked>> | 80% | 49,269 psi | 77% | 2917 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 80% | 39,697 psi | 62% | 2733 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 80% | 50,575 psi | 79% | 2904 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,719 psi | 78% | 2887 fps | 98.5% |
| Hodgdon Retumbo | 76.2 gr | 80% | 41,278 psi | 65% | 2854 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,631 psi | 45% | 1808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,995 psi | 80% | 2887 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 80% | 47,036 psi | 74% | 2897 fps | 98.5% |
| IMR 8133 Enduron | <<locked>> | 84% | 36,593 psi | 57% | 2677 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 43,395 psi | 68% | 2730 fps | 99.8% |
| Norma 217 | <<locked>> | 80% | 32,518 psi | 51% | 2592 fps | 96.4% |
| Norma MRP | <<locked>> | 80% | 52,692 psi | 83% | 2992 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 47,805 psi | 75% | 2913 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 80% | 43,758 psi | 69% | 2789 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,457 psi | 46% | 1850 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,191 psi | 65% | 2831 fps | 99.7% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,479 psi | 60% | 2726 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 53,156 psi | 83% | 2930 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 80% | 52,620 psi | 82% | 2949 fps | 99.8% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 50,604 psi | 79% | 2900 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,272 psi | 82% | 2943 fps | 99.8% |
| Somchem S385 | <<locked>> | 80% | 53,214 psi | 83% | 2920 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 46,775 psi | 73% | 2799 fps | 99.5% |
| Vihtavuori N170 | <<locked>> | 88% | 53,026 psi | 83% | 2917 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 80% | 53,200 psi | 83% | 2933 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,909 psi | 81% | 2986 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 80% | 44,251 psi | 69% | 2815 fps | 97.6% |
| Vihtavuori N568 | <<locked>> | 82% | 42,148 psi | 66% | 2802 fps | 95.7% |
| Vihtavuori N570 | 87 gr | 88% | 49,530 psi | 78% | 2986 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 47,805 psi | 75% | 2927 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,197 psi | 77% | 2851 fps | 99.5% |
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 X S. ADI AR 2218 delivers the highest muzzle velocity at 3,120 fps; across all powders the maximum-charge window runs from 2,008 fps to 3,120 fps. Accurate 8700 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 60–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:10.5 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 | 140gr | Barnes X S 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.