Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 140gr | Woodleigh PP SN 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, Alliant Reloder-17 and ReloadSwiss RS 70.
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% | 42,293 psi | 88% | 2641 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 42,540 psi | 89% | 2684 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 41,060 psi | 86% | 2730 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 84% | 41,713 psi | 87% | 2654 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 42,076 psi | 88% | 2789 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 41,147 psi | 86% | 2674 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 41,553 psi | 87% | 2687 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 92% | 40,930 psi | 86% | 2740 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 40,843 psi | 85% | 2769 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,289 psi | 78% | 2687 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,510 psi | 87% | 2841 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 40,944 psi | 86% | 2680 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 84% | 42,003 psi | 88% | 2687 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 42,757 psi | 89% | 2733 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 42,308 psi | 88% | 2736 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,389 psi | 74% | 1755 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 41,133 psi | 86% | 2635 fps | 98.2% |
| IMR 4831 | <<locked>> | 94% | 42,409 psi | 89% | 2736 fps | 98% |
| IMR 4895 | <<locked>> | 82% | 42,569 psi | 89% | 2717 fps | 98.9% |
| Lovex S062 | <<locked>> | 82% | 41,046 psi | 86% | 2638 fps | 99.4% |
| Lovex S065 | <<locked>> | 90% | 42,975 psi | 90% | 2677 fps | 96.6% |
| Norma 203B | <<locked>> | 82% | 40,886 psi | 85% | 2674 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 41,118 psi | 86% | 2726 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 82% | 40,625 psi | 85% | 2690 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 94% | 42,975 psi | 90% | 2766 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,737 psi | 75% | 1795 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 40,654 psi | 85% | 2776 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 40,857 psi | 85% | 2749 fps | 97.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,133 psi | 86% | 2759 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 82% | 42,873 psi | 90% | 2654 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 86% | 41,075 psi | 86% | 2677 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,975 psi | 90% | 2677 fps | 96.6% |
| Shooters World Precision | <<locked>> | 82% | 41,046 psi | 86% | 2638 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 42,235 psi | 88% | 2730 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 41,162 psi | 86% | 2566 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 41,829 psi | 87% | 2680 fps | 99.1% |
| Somchem S365 | <<locked>> | 96% | 41,916 psi | 88% | 2785 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 82% | 42,192 psi | 88% | 2631 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 43,076 psi | 90% | 2644 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,656 psi | 89% | 2664 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 92% | 43,091 psi | 90% | 2726 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 82% | 41,365 psi | 86% | 2635 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 42,554 psi | 89% | 2733 fps | 97.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,335 psi | 84% | 2766 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 40,582 psi | 85% | 2654 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,359 psi | 70% | 2677 fps | 97.7% |
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% | 39,610 psi | 83% | 2592 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,478 psi | 78% | 2585 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,533 psi | 70% | 2562 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 36,825 psi | 77% | 2549 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,262 psi | 82% | 2726 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,216 psi | 76% | 2569 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,030 psi | 82% | 2631 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 33,997 psi | 71% | 2572 fps | 95.3% |
| Alliant Reloder-17 | 43 gr | 80% | 31,299 psi | 65% | 2530 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,067 psi | 65% | 2523 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,100 psi | 75% | 2713 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 35,737 psi | 75% | 2569 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 80% | 36,767 psi | 77% | 2572 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,211 psi | 61% | 2415 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,479 psi | 82% | 2677 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,237 psi | 55% | 1565 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,609 psi | 81% | 2582 fps | 97.6% |
| IMR 4831 | <<locked>> | 88% | 34,737 psi | 73% | 2572 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 39,958 psi | 83% | 2664 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 38,537 psi | 81% | 2589 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 38,043 psi | 79% | 2575 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 38,392 psi | 80% | 2621 fps | 98% |
| Norma URP | <<locked>> | 86% | 33,997 psi | 71% | 2562 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 37,927 psi | 79% | 2635 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 40,451 psi | 85% | 2713 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,629 psi | 56% | 1604 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,301 psi | 70% | 2598 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,781 psi | 75% | 2635 fps | 95.6% |
| ReloadSwiss RS 70 | 49.1 gr | 90% | 38,450 psi | 80% | 2697 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 40,263 psi | 84% | 2605 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 33,837 psi | 71% | 2520 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,043 psi | 79% | 2575 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 38,537 psi | 81% | 2589 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,606 psi | 72% | 2562 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,419 psi | 76% | 2474 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 34,606 psi | 72% | 2523 fps | 97.5% |
| Somchem S365 | 41.8 gr | 82% | 26,774 psi | 56% | 2402 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 39,740 psi | 83% | 2589 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,451 psi | 85% | 2598 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,982 psi | 69% | 2464 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 35,607 psi | 74% | 2569 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,899 psi | 81% | 2585 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 34,853 psi | 73% | 2566 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 92% | 31,154 psi | 65% | 2546 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,254 psi | 61% | 2379 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,399 psi | 61% | 2543 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 | Woodleigh PP SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,841 fps; across all powders the maximum-charge window runs from 1,755 fps to 2,841 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, Alliant Reloder-17, ReloadSwiss RS 70 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 140gr | Woodleigh PP SN 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.