Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 139gr | MEN SF bullet and 49 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 ReloadSwiss RS 62.
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>> | 84% | 43,294 psi | 90% | 2661 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 40,785 psi | 85% | 2651 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 41,989 psi | 88% | 2746 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 86% | 42,888 psi | 90% | 2671 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 43,308 psi | 90% | 2812 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 42,134 psi | 88% | 2694 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,612 psi | 89% | 2703 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,916 psi | 88% | 2756 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 90% | 41,916 psi | 88% | 2785 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,766 psi | 75% | 2644 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,552 psi | 83% | 2789 fps | 96.2% |
| Bofors RP3 | <<locked>> | 86% | 42,032 psi | 88% | 2700 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 43,236 psi | 90% | 2707 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 41,118 psi | 86% | 2697 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 40,698 psi | 85% | 2703 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,983 psi | 73% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 43,091 psi | 90% | 2684 fps | 99% |
| IMR 4064 | <<locked>> | 84% | 42,250 psi | 88% | 2654 fps | 98.2% |
| IMR 4831 | <<locked>> | 96% | 43,163 psi | 90% | 2749 fps | 97.9% |
| IMR 4895 | <<locked>> | 82% | 41,162 psi | 86% | 2687 fps | 98.4% |
| Lovex S062 | <<locked>> | 84% | 42,032 psi | 88% | 2657 fps | 99.4% |
| Lovex S065 | <<locked>> | 90% | 41,597 psi | 87% | 2648 fps | 95.8% |
| Norma 203B | <<locked>> | 84% | 41,930 psi | 88% | 2694 fps | 98.6% |
| Norma URP | <<locked>> | 94% | 42,134 psi | 88% | 2743 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 84% | 41,756 psi | 87% | 2713 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,607 psi | 74% | 1788 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,916 psi | 88% | 2756 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,930 psi | 88% | 2799 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 41,930 psi | 88% | 2769 fps | 97.2% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,453 psi | 89% | 2782 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 82% | 41,510 psi | 87% | 2625 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 88% | 42,163 psi | 88% | 2697 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,597 psi | 87% | 2648 fps | 95.8% |
| Shooters World Precision | <<locked>> | 84% | 42,032 psi | 88% | 2657 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 40,538 psi | 85% | 2694 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 43,062 psi | 90% | 2690 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 42,322 psi | 88% | 2585 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 42,975 psi | 90% | 2700 fps | 99% |
| Somchem S365 | <<locked>> | 98% | 42,743 psi | 89% | 2799 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 82% | 40,611 psi | 85% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 41,466 psi | 87% | 2618 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 41,147 psi | 86% | 2635 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 92% | 41,408 psi | 87% | 2687 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 84% | 42,743 psi | 89% | 2657 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 40,698 psi | 85% | 2694 fps | 96.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,421 psi | 80% | 2723 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 41,858 psi | 87% | 2674 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,966 psi | 67% | 2621 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 42,438 psi | 89% | 2694 fps | 99% |
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% | 38,072 psi | 80% | 2566 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,013 psi | 75% | 2556 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 34,084 psi | 71% | 2575 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 35,607 psi | 74% | 2516 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,855 psi | 79% | 2687 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,925 psi | 73% | 2539 fps | 97.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,710 psi | 79% | 2602 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,925 psi | 73% | 2592 fps | 95.3% |
| Alliant Reloder-17 | 41.7 gr | 80% | 30,139 psi | 63% | 2490 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,778 psi | 66% | 2539 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,057 psi | 77% | 2730 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 34,403 psi | 72% | 2539 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 82% | 37,695 psi | 79% | 2592 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,892 psi | 62% | 2431 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,913 psi | 79% | 2644 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,136 psi | 55% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,408 psi | 84% | 2628 fps | 98.6% |
| IMR 4064 | <<locked>> | 80% | 37,304 psi | 78% | 2549 fps | 97% |
| IMR 4831 | <<locked>> | 90% | 35,389 psi | 74% | 2585 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 38,551 psi | 81% | 2631 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 37,188 psi | 78% | 2556 fps | 98.6% |
| Lovex S065 | <<locked>> | 88% | 39,059 psi | 82% | 2595 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 37,101 psi | 78% | 2592 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 34,882 psi | 73% | 2582 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 36,492 psi | 76% | 2598 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,513 psi | 55% | 1598 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,175 psi | 82% | 2700 fps | 97.5% |
| ReloadSwiss RS 60 | 41.7 gr | 80% | 32,068 psi | 67% | 2559 fps | 98.5% |
| ReloadSwiss RS 62 | 46.9 gr | 90% | 36,579 psi | 76% | 2651 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,624 psi | 83% | 2720 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 38,928 psi | 81% | 2572 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 32,300 psi | 67% | 2480 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,059 psi | 82% | 2595 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 37,188 psi | 78% | 2556 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,446 psi | 70% | 2530 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,408 psi | 84% | 2638 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,114 psi | 73% | 2448 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 33,359 psi | 70% | 2493 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 27,311 psi | 57% | 2415 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 38,189 psi | 80% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,856 psi | 81% | 2566 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,589 psi | 66% | 2428 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 36,332 psi | 76% | 2582 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,405 psi | 78% | 2556 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,781 psi | 75% | 2585 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 33,837 psi | 71% | 2615 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,269 psi | 63% | 2402 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,066 psi | 63% | 2556 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,566 psi | 83% | 2638 fps | 98.5% |
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 49 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 139gr | MEN SF. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,812 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,812 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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. ReloadSwiss RS 60, Alliant Reloder-17, ReloadSwiss RS 62 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 139gr | MEN SF 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.