Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .284 | 135gr | Atomic 29 HP 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, ReloadSwiss RS 76 and ADI AR 2218.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 86% | 55,463 psi | 87% | 2979 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 54,433 psi | 85% | 3071 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 84% | 56,231 psi | 88% | 3064 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 86% | 54,882 psi | 86% | 3071 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 94% | 54,186 psi | 85% | 3045 fps | 99.7% |
| ADI AR 2218 | <<locked>> | 98% | 55,201 psi | 87% | 3150 fps | 97.8% |
| ADI AR 2225 | <<locked>> | 98% | 57,609 psi | 90% | 3123 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 56,362 psi | 88% | 3061 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 84% | 55,782 psi | 87% | 3051 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 86% | 55,434 psi | 87% | 3068 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 57,319 psi | 90% | 3035 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 54,288 psi | 85% | 3051 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 54,288 psi | 85% | 3061 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 57,334 psi | 90% | 3136 fps | 98% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3117 fps | 97.6% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 55,666 psi | 87% | 3028 fps | 97.8% |
| Bofors RP15 | <<locked>> | 88% | 55,056 psi | 86% | 3061 fps | 99.8% |
| Bofors RP30 | <<locked>> | 92% | 54,302 psi | 85% | 3061 fps | 99.6% |
| Bofors RP5 | <<locked>> | 86% | 55,434 psi | 87% | 3068 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 92% | 55,564 psi | 87% | 3068 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 84% | 53,809 psi | 84% | 3002 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 56,565 psi | 89% | 3048 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 56,376 psi | 88% | 2976 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 57,609 psi | 90% | 3196 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,681 psi | 59% | 2041 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 54,230 psi | 85% | 2989 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 88% | 57,305 psi | 90% | 3117 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 56,666 psi | 89% | 3107 fps | 99.8% |
| Lovex S071 | <<locked>> | 92% | 57,276 psi | 90% | 3002 fps | 100% |
| Norma 217 | <<locked>> | 98% | 54,012 psi | 85% | 3068 fps | 100% |
| Norma MRP | <<locked>> | 84% | 55,622 psi | 87% | 3084 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 54,650 psi | 86% | 3074 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 90% | 57,638 psi | 90% | 3061 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,609 psi | 61% | 2087 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 54,563 psi | 86% | 3110 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 54,041 psi | 85% | 3071 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 84% | 56,608 psi | 89% | 3031 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 84% | 55,593 psi | 87% | 3045 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 55,201 psi | 87% | 3041 fps | 99.9% |
| Somchem S361 | <<locked>> | 82% | 54,491 psi | 85% | 2956 fps | 99% |
| Somchem S385 | <<locked>> | 84% | 55,999 psi | 88% | 3012 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 56,275 psi | 88% | 2999 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 55,796 psi | 87% | 3009 fps | 96.1% |
| Vihtavuori N555 | <<locked>> | 84% | 55,390 psi | 87% | 3015 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 54,984 psi | 86% | 3084 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 90% | 56,420 psi | 88% | 3077 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 92% | 54,491 psi | 85% | 3077 fps | 98.5% |
| Vihtavuori N570 | <<locked>> | 94% | 55,854 psi | 88% | 3136 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 86% | 53,998 psi | 85% | 3064 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 55,956 psi | 88% | 3005 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% | 44,976 psi | 70% | 2805 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 46,978 psi | 74% | 2933 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 80% | 49,008 psi | 77% | 2943 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 44,382 psi | 70% | 2881 fps | 97.5% |
| ADI AR 2217 | <<locked>> | 84% | 38,000 psi | 60% | 2730 fps | 96% |
| ADI AR 2218 | 95.7 gr | 94% | 47,500 psi | 74% | 2995 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 30,342 psi | 48% | 2562 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 49,327 psi | 77% | 2940 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,863 psi | 77% | 2933 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 45,179 psi | 71% | 2887 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,816 psi | 69% | 2828 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,985 psi | 60% | 2756 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 50,372 psi | 79% | 2999 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 48,979 psi | 77% | 2989 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 96% | 49,226 psi | 77% | 2976 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 45,600 psi | 71% | 2844 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 41,901 psi | 66% | 2818 fps | 97.8% |
| Bofors RP30 | <<locked>> | 82% | 38,116 psi | 60% | 2743 fps | 96% |
| Bofors RP5 | <<locked>> | 80% | 45,179 psi | 71% | 2887 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 80% | 35,926 psi | 56% | 2680 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 80% | 46,934 psi | 74% | 2884 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,093 psi | 72% | 2864 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,678 psi | 83% | 2923 fps | 100% |
| Hodgdon Retumbo | 76.8 gr | 80% | 37,028 psi | 58% | 2792 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,326 psi | 44% | 1837 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,587 psi | 75% | 2871 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 80% | 43,091 psi | 68% | 2861 fps | 97.2% |
| IMR 8133 Enduron | <<locked>> | 88% | 37,014 psi | 58% | 2726 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 38,696 psi | 61% | 2680 fps | 99.1% |
| Norma 217 | <<locked>> | 84% | 32,430 psi | 51% | 2628 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 48,080 psi | 75% | 2959 fps | 99.8% |
| Ramshot Grand | <<locked>> | 80% | 43,395 psi | 68% | 2871 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 80% | 39,291 psi | 62% | 2743 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,921 psi | 45% | 1877 fps | 100% |
| ReloadSwiss RS 76 | 82.2 gr | 80% | 36,680 psi | 57% | 2762 fps | 98.4% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 42,757 psi | 67% | 2858 fps | 96.2% |
| Rottweil R 904 | <<locked>> | 80% | 49,545 psi | 78% | 2917 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 80% | 48,472 psi | 76% | 2923 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 48,124 psi | 75% | 2920 fps | 99.2% |
| Somchem S361 | <<locked>> | 80% | 50,908 psi | 80% | 2900 fps | 98.5% |
| Somchem S385 | <<locked>> | 80% | 49,095 psi | 77% | 2900 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 80% | 42,801 psi | 67% | 2769 fps | 98.7% |
| Vihtavuori N170 | <<locked>> | 90% | 52,054 psi | 82% | 2943 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 48,356 psi | 76% | 2904 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 47,616 psi | 75% | 2953 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 80% | 39,726 psi | 62% | 2759 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 86% | 43,671 psi | 68% | 2877 fps | 95.8% |
| Vihtavuori N570 | <<locked>> | 90% | 48,124 psi | 75% | 2999 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 42,627 psi | 67% | 2881 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 45,339 psi | 71% | 2825 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 50 powders for 7 mm Rem. Ultra Mag. loaded with the .284 | 135gr | Atomic 29 HP. Hodgdon Retumbo delivers the highest muzzle velocity at 3,196 fps; across all powders the maximum-charge window runs from 2,041 fps to 3,196 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 135.0 gr projectile in 0.284" calls for a 1:11.0 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, ReloadSwiss RS 76, ADI AR 2218 rank at the top here: for 7 mm Rem. Ultra Mag. with the .284 | 135gr | Atomic 29 HP 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.