Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .277 | 140gr | Federal Trophy Bonded bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and SNPE Vectan SP 11.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 86% | 41,785 psi | 87% | 2598 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 41,930 psi | 88% | 2635 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 42,917 psi | 90% | 2720 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 82% | 41,046 psi | 86% | 2608 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 88% | 41,945 psi | 88% | 2605 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 43,163 psi | 90% | 2618 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 82% | 42,424 psi | 89% | 2618 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 42,279 psi | 88% | 2733 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 40,988 psi | 86% | 2625 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 86% | 41,684 psi | 87% | 2641 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 96% | 40,857 psi | 85% | 2680 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 92% | 40,669 psi | 85% | 2710 fps | 98.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 42,757 psi | 89% | 2657 fps | 97.2% |
| Bofors RP3 | <<locked>> | 88% | 40,567 psi | 85% | 2631 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 41,321 psi | 86% | 2635 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 88% | 42,119 psi | 88% | 2638 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 82% | 41,379 psi | 86% | 2618 fps | 98.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,032 psi | 88% | 2667 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 42,221 psi | 88% | 2687 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,780 psi | 73% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 42,206 psi | 88% | 2618 fps | 98.5% |
| IMR 3031 | <<locked>> | 84% | 43,062 psi | 90% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 41,307 psi | 86% | 2585 fps | 97.4% |
| IMR 4831 | <<locked>> | 98% | 41,234 psi | 86% | 2667 fps | 96.8% |
| IMR 4895 | <<locked>> | 86% | 42,685 psi | 89% | 2674 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 82% | 43,163 psi | 90% | 2618 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 84% | 42,047 psi | 88% | 2635 fps | 99.8% |
| Lovex S060 | <<locked>> | 82% | 41,756 psi | 87% | 2549 fps | 98% |
| Lovex S062 | <<locked>> | 86% | 41,002 psi | 86% | 2592 fps | 98.9% |
| Norma 201 | <<locked>> | 84% | 42,598 psi | 89% | 2608 fps | 99.1% |
| Norma 202 | <<locked>> | 84% | 43,018 psi | 90% | 2625 fps | 100% |
| Norma 203B | <<locked>> | 86% | 41,002 psi | 86% | 2631 fps | 97.9% |
| Norma URP | <<locked>> | 98% | 43,207 psi | 90% | 2717 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 86% | 40,480 psi | 85% | 2641 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 42,119 psi | 88% | 2635 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,114 psi | 73% | 1732 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 43,265 psi | 90% | 2740 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 40,770 psi | 85% | 2723 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 42,772 psi | 89% | 2736 fps | 96.8% |
| Rottweil R 902 | <<locked>> | 86% | 43,250 psi | 90% | 2612 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 92% | 43,207 psi | 90% | 2674 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 42,047 psi | 88% | 2635 fps | 99.8% |
| Shooters World Precision | <<locked>> | 86% | 41,002 psi | 86% | 2592 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 42,047 psi | 88% | 2677 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 41,089 psi | 86% | 2585 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 42,047 psi | 88% | 2625 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 41,771 psi | 87% | 2523 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 41,481 psi | 87% | 2526 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 41,437 psi | 87% | 2530 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 40,698 psi | 85% | 2589 fps | 97.7% |
| Somchem S355 | <<locked>> | 90% | 41,611 psi | 87% | 2628 fps | 98.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,162 psi | 86% | 2723 fps | 99.4% |
| Vihtavuori N133 | <<locked>> | 82% | 41,858 psi | 87% | 2520 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 42,264 psi | 88% | 2598 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 40,683 psi | 85% | 2559 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 42,322 psi | 88% | 2612 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 96% | 42,757 psi | 89% | 2667 fps | 96.8% |
| Vihtavuori N530 | <<locked>> | 82% | 43,207 psi | 90% | 2615 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 86% | 41,539 psi | 87% | 2595 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 96% | 41,974 psi | 88% | 2674 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 40,756 psi | 85% | 2598 fps | 98.2% |
| Winchester 748 | <<locked>> | 82% | 42,076 psi | 88% | 2654 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 84% | 41,220 psi | 86% | 2628 fps | 98.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 34,461 psi | 72% | 2461 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,590 psi | 68% | 2444 fps | 99.2% |
| Accurate 4350 | <<locked>> | 94% | 37,376 psi | 78% | 2612 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 38,566 psi | 81% | 2556 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 34,925 psi | 73% | 2457 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,567 psi | 85% | 2569 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 39,566 psi | 83% | 2569 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 37,043 psi | 77% | 2615 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,879 psi | 67% | 2425 fps | 96.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,476 psi | 72% | 2484 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,406 psi | 80% | 2625 fps | 95.8% |
| Alliant Reloder-17 | 40.9 gr | 86% | 33,533 psi | 70% | 2539 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,275 psi | 78% | 2546 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 31,198 psi | 65% | 2425 fps | 96.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,508 psi | 80% | 2579 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 86% | 39,247 psi | 82% | 2579 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 38,812 psi | 81% | 2566 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,808 psi | 69% | 2464 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,693 psi | 72% | 2526 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,715 psi | 54% | 1506 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,188 psi | 78% | 2516 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 37,565 psi | 78% | 2569 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,330 psi | 72% | 2434 fps | 95.3% |
| IMR 4831 | <<locked>> | 94% | 36,230 psi | 76% | 2562 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 35,244 psi | 74% | 2513 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 80% | 40,567 psi | 85% | 2569 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 36,912 psi | 77% | 2536 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 39,291 psi | 82% | 2500 fps | 97.4% |
| Lovex S062 | <<locked>> | 80% | 34,098 psi | 71% | 2444 fps | 97.3% |
| Norma 201 | <<locked>> | 80% | 37,826 psi | 79% | 2513 fps | 98.3% |
| Norma 202 | <<locked>> | 80% | 37,826 psi | 79% | 2526 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 33,852 psi | 71% | 2474 fps | 95.8% |
| Norma URP | <<locked>> | 94% | 38,014 psi | 79% | 2612 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 33,141 psi | 69% | 2474 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,305 psi | 82% | 2582 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,121 psi | 55% | 1549 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,273 psi | 74% | 2569 fps | 95.6% |
| ReloadSwiss RS 60 | 38 gr | 80% | 29,312 psi | 61% | 2431 fps | 96.6% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 37,420 psi | 78% | 2625 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 35,998 psi | 75% | 2467 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 82% | 31,328 psi | 65% | 2418 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,912 psi | 77% | 2536 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 34,098 psi | 71% | 2444 fps | 97.3% |
| SNPE Vectan SP 11 | 38.4 gr | 82% | 32,576 psi | 68% | 2467 fps | 95% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,305 psi | 80% | 2530 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,869 psi | 77% | 2516 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,421 psi | 82% | 2480 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,372 psi | 68% | 2346 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 38,957 psi | 81% | 2484 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,927 psi | 79% | 2530 fps | 96.9% |
| Somchem S355 | <<locked>> | 80% | 30,487 psi | 64% | 2379 fps | 95.1% |
| Somchem S365 | <<locked>> | 88% | 28,253 psi | 59% | 2402 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 39,523 psi | 83% | 2480 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,824 psi | 73% | 2461 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,795 psi | 75% | 2464 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 28,877 psi | 60% | 2320 fps | 96% |
| Vihtavuori N160 | <<locked>> | 92% | 37,623 psi | 79% | 2562 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 40,480 psi | 85% | 2562 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 34,200 psi | 71% | 2448 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 94% | 39,131 psi | 82% | 2618 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,444 psi | 66% | 2388 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 39,436 psi | 82% | 2605 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,042 psi | 75% | 2520 fps | 97.2% |
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 63 powders for 7 mm Mag. Fl. H&H loaded with the .277 | 140gr | Federal Trophy Bonded. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,740 fps; across all powders the maximum-charge window runs from 1,690 fps to 2,740 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 63 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 73–90 %, 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. Hodgdon Hybrid 100V, 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. ReloadSwiss RS 60, Alliant Reloder-17, SNPE Vectan SP 11 rank at the top here: for 7 mm Mag. Fl. H&H 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.