Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 140gr | Swift A-Frame bullet and 46 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, ReloadSwiss RS 70 and Alliant Reloder-17.
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>> | 82% | 42,380 psi | 89% | 2641 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 42,656 psi | 89% | 2687 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 41,133 psi | 86% | 2730 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 84% | 41,510 psi | 87% | 2648 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,872 psi | 87% | 2782 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 41,176 psi | 86% | 2674 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 41,582 psi | 87% | 2687 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 92% | 40,988 psi | 86% | 2740 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 40,915 psi | 85% | 2769 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,333 psi | 78% | 2690 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,336 psi | 86% | 2838 fps | 97.2% |
| Bofors RP3 | <<locked>> | 84% | 41,002 psi | 86% | 2680 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 84% | 41,785 psi | 87% | 2684 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 42,830 psi | 89% | 2733 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 42,366 psi | 89% | 2736 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,433 psi | 74% | 1755 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 41,220 psi | 86% | 2635 fps | 98.2% |
| IMR 4831 | <<locked>> | 94% | 42,206 psi | 88% | 2733 fps | 97.9% |
| IMR 4895 | <<locked>> | 82% | 42,598 psi | 89% | 2720 fps | 98.9% |
| Lovex S062 | <<locked>> | 82% | 40,828 psi | 85% | 2635 fps | 99.4% |
| Lovex S065 | <<locked>> | 90% | 43,033 psi | 90% | 2680 fps | 96.6% |
| Norma 203B | <<locked>> | 82% | 40,959 psi | 86% | 2674 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 41,220 psi | 86% | 2726 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 84% | 43,265 psi | 90% | 2743 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 94% | 43,047 psi | 90% | 2769 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,766 psi | 75% | 1795 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 40,741 psi | 85% | 2776 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 40,959 psi | 86% | 2749 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,205 psi | 86% | 2762 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 82% | 42,975 psi | 90% | 2654 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 86% | 41,162 psi | 86% | 2677 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 43,033 psi | 90% | 2680 fps | 96.6% |
| Shooters World Precision | <<locked>> | 82% | 40,828 psi | 85% | 2635 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 42,322 psi | 88% | 2733 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 41,234 psi | 86% | 2566 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 41,930 psi | 88% | 2680 fps | 99.1% |
| Somchem S365 | <<locked>> | 96% | 41,945 psi | 88% | 2785 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 82% | 42,279 psi | 88% | 2635 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,902 psi | 90% | 2644 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,714 psi | 89% | 2664 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 92% | 43,192 psi | 90% | 2726 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 82% | 41,394 psi | 86% | 2635 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 42,366 psi | 89% | 2726 fps | 97.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,408 psi | 84% | 2766 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 40,669 psi | 85% | 2654 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,402 psi | 70% | 2677 fps | 97.8% |
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% | 39,653 psi | 83% | 2592 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,507 psi | 78% | 2585 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,330 psi | 70% | 2556 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 36,854 psi | 77% | 2549 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,073 psi | 82% | 2720 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,274 psi | 76% | 2569 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,073 psi | 82% | 2635 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,069 psi | 71% | 2572 fps | 95.3% |
| Alliant Reloder-17 | 43 gr | 80% | 31,357 psi | 66% | 2530 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,111 psi | 65% | 2526 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 35,940 psi | 75% | 2707 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 35,781 psi | 75% | 2572 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 80% | 36,840 psi | 77% | 2575 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,225 psi | 61% | 2415 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,523 psi | 83% | 2680 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,266 psi | 55% | 1565 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,682 psi | 81% | 2582 fps | 97.6% |
| IMR 4831 | <<locked>> | 88% | 34,766 psi | 73% | 2572 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 40,030 psi | 84% | 2664 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 38,377 psi | 80% | 2582 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 38,087 psi | 80% | 2575 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 38,464 psi | 80% | 2621 fps | 98% |
| Norma URP | <<locked>> | 86% | 34,026 psi | 71% | 2566 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 37,739 psi | 79% | 2631 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 40,248 psi | 84% | 2707 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,643 psi | 56% | 1608 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,373 psi | 70% | 2602 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,607 psi | 74% | 2631 fps | 95.6% |
| ReloadSwiss RS 70 | 49.1 gr | 90% | 38,522 psi | 80% | 2700 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 40,350 psi | 84% | 2605 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 33,678 psi | 70% | 2513 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,087 psi | 80% | 2575 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 38,377 psi | 80% | 2582 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,650 psi | 72% | 2566 fps | 96.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,245 psi | 76% | 2470 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 34,679 psi | 72% | 2523 fps | 97.5% |
| Somchem S365 | 41.8 gr | 82% | 26,789 psi | 56% | 2402 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 39,566 psi | 83% | 2585 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,292 psi | 84% | 2595 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,837 psi | 69% | 2461 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 86% | 35,433 psi | 74% | 2562 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 38,928 psi | 81% | 2585 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 34,925 psi | 73% | 2566 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 92% | 31,183 psi | 65% | 2549 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,298 psi | 61% | 2379 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,457 psi | 62% | 2546 fps | 95.3% |
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 46 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 140gr | Swift A-Frame. Alliant Reloder-26 delivers the highest muzzle velocity at 2,838 fps; across all powders the maximum-charge window runs from 1,755 fps to 2,838 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 46 of the 46 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:13.0 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. Somchem S365, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 140gr | Swift A-Frame 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.