Load Specifications
Load data in caliber 7 mm Rem. Ultra Mag. with .277 | 140gr | Federal Trophy Bonded bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 and Alliant Reloder-33.
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% | 57,682 psi | 90% | 2972 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 56,724 psi | 89% | 3071 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 84% | 54,810 psi | 86% | 3005 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 88% | 57,217 psi | 90% | 3074 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 96% | 56,275 psi | 88% | 3045 fps | 99.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 3153 fps | 98.3% |
| ADI AR 2225 | <<locked>> | 98% | 55,506 psi | 87% | 3064 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 54,447 psi | 85% | 2992 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,667 psi | 90% | 3068 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,709 psi | 87% | 2979 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 56,144 psi | 88% | 3041 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 56,463 psi | 88% | 3058 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 54,940 psi | 86% | 3064 fps | 97.6% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 54,795 psi | 86% | 3048 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 54,201 psi | 85% | 2966 fps | 97.5% |
| Bofors RP15 | <<locked>> | 90% | 57,072 psi | 89% | 3054 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 56,101 psi | 88% | 3054 fps | 99.8% |
| Bofors RP5 | <<locked>> | 88% | 57,667 psi | 90% | 3068 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 53,679 psi | 84% | 3005 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 86% | 56,202 psi | 88% | 3002 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 55,158 psi | 86% | 2986 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 54,882 psi | 86% | 2917 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 55,448 psi | 87% | 3130 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,565 psi | 59% | 1995 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,927 psi | 89% | 2979 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,696 psi | 90% | 2982 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,478 psi | 89% | 2986 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 88% | 55,608 psi | 87% | 3051 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 54,375 psi | 85% | 3038 fps | 99.7% |
| Lovex S071 | <<locked>> | 92% | 55,535 psi | 87% | 2943 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,608 psi | 87% | 3061 fps | 100% |
| Norma MRP | <<locked>> | 84% | 53,867 psi | 84% | 3022 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,855 psi | 89% | 3071 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 90% | 55,651 psi | 87% | 2999 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,522 psi | 60% | 2037 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 56,695 psi | 89% | 3114 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 56,130 psi | 88% | 3074 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 84% | 55,245 psi | 87% | 2972 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 84% | 54,128 psi | 85% | 2982 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,464 psi | 90% | 3035 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,927 psi | 89% | 2959 fps | 99.3% |
| Somchem S365 | <<locked>> | 82% | 57,174 psi | 90% | 2976 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 54,505 psi | 85% | 2953 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 54,708 psi | 86% | 2936 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 57,479 psi | 90% | 3005 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 57,217 psi | 90% | 3081 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 90% | 54,607 psi | 86% | 3012 fps | 99.3% |
| Vihtavuori N568 | <<locked>> | 94% | 56,391 psi | 88% | 3077 fps | 98.9% |
| Vihtavuori N570 | <<locked>> | 94% | 53,563 psi | 84% | 3068 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 56,159 psi | 88% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 54,418 psi | 85% | 2946 fps | 99.8% |
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% | 43,830 psi | 69% | 2753 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 80% | 45,658 psi | 72% | 2877 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 80% | 47,805 psi | 75% | 2884 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 80% | 42,917 psi | 67% | 2818 fps | 97.3% |
| ADI AR 2217 | <<locked>> | 84% | 36,854 psi | 58% | 2671 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 96% | 49,327 psi | 77% | 3005 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 29,486 psi | 46% | 2510 fps | 95.3% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,718 psi | 75% | 2877 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,685 psi | 68% | 2825 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,496 psi | 67% | 2772 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,840 psi | 58% | 2700 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,501 psi | 76% | 2936 fps | 100% |
| Alliant Reloder-33 | 91 gr | 92% | 47,021 psi | 74% | 2923 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 98% | 50,850 psi | 80% | 2979 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 47,529 psi | 74% | 2848 fps | 95.9% |
| Bofors RP15 | <<locked>> | 80% | 40,756 psi | 64% | 2762 fps | 97.7% |
| Bofors RP30 | <<locked>> | 82% | 36,898 psi | 58% | 2687 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 43,685 psi | 68% | 2825 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 80% | 34,867 psi | 55% | 2625 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 80% | 45,571 psi | 71% | 2818 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,715 psi | 70% | 2802 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,474 psi | 81% | 2871 fps | 100% |
| Hodgdon Retumbo | 73.4 gr | 80% | 35,969 psi | 56% | 2736 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,239 psi | 44% | 1795 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,403 psi | 84% | 2927 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 54,056 psi | 85% | 2933 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,572 psi | 73% | 2815 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 80% | 41,771 psi | 65% | 2799 fps | 97% |
| IMR 8133 Enduron | <<locked>> | 88% | 35,694 psi | 56% | 2667 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 37,608 psi | 59% | 2625 fps | 98.9% |
| Norma 217 | <<locked>> | 84% | 31,154 psi | 49% | 2569 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 46,630 psi | 73% | 2897 fps | 99.7% |
| Ramshot Grand | <<locked>> | 80% | 41,901 psi | 66% | 2812 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 80% | 37,855 psi | 59% | 2684 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,993 psi | 45% | 1837 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 35,418 psi | 56% | 2707 fps | 98.1% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 41,118 psi | 64% | 2799 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 48,414 psi | 76% | 2858 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 80% | 47,239 psi | 74% | 2864 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,891 psi | 73% | 2861 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 49,676 psi | 78% | 2841 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 53,432 psi | 84% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,645 psi | 75% | 2838 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 80% | 41,742 psi | 65% | 2713 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 47,050 psi | 74% | 2848 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,238 psi | 72% | 2890 fps | 97.6% |
| Vihtavuori N565 | <<locked>> | 80% | 38,435 psi | 60% | 2703 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 86% | 42,105 psi | 66% | 2815 fps | 95.5% |
| Vihtavuori N570 | 87.5 gr | 92% | 49,748 psi | 78% | 2999 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,872 psi | 64% | 2822 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,005 psi | 69% | 2766 fps | 98.6% |
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 51 powders for 7 mm Rem. Ultra Mag. loaded with the .277 | 140gr | Federal Trophy Bonded. ADI AR 2218 delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,995 fps to 3,153 fps. ADI AR 2218 gives the best case fill at 100 %, and 51 of the 51 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 140.0 gr projectile in 0.284" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, Alliant Reloder-50, 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. Hodgdon Retumbo, Vihtavuori N570, Alliant Reloder-33 rank at the top here: for 7 mm Rem. Ultra Mag. with the .277 | 140gr | Federal Trophy Bonded 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.