Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 160gr | Woodleigh PP SN bullet and 42 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 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 3100ᴾ | <<locked>> | 100% | 42,511 psi | 89% | 2562 fps | 97.5% |
| Accurate 4350 | <<locked>> | 90% | 42,061 psi | 88% | 2572 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 82% | 41,945 psi | 88% | 2484 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 41,669 psi | 87% | 2507 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 41,495 psi | 87% | 2582 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 86% | 41,205 psi | 86% | 2602 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,480 psi | 85% | 2592 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,119 psi | 88% | 2690 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 41,510 psi | 87% | 2513 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 42,453 psi | 89% | 2520 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 88% | 41,959 psi | 88% | 2569 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 40,712 psi | 85% | 2520 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 75% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 42,424 psi | 89% | 2513 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,350 psi | 86% | 2470 fps | 95.9% |
| IMR 4831 | <<locked>> | 92% | 43,047 psi | 90% | 2572 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 40,799 psi | 85% | 2467 fps | 97.3% |
| Lovex S070 | <<locked>> | 88% | 41,423 psi | 87% | 2500 fps | 96.4% |
| Norma MRP | <<locked>> | 98% | 42,279 psi | 88% | 2651 fps | 96.3% |
| Norma URP | <<locked>> | 90% | 41,887 psi | 88% | 2566 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 40,973 psi | 86% | 2556 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,245 psi | 76% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,612 psi | 89% | 2503 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 41,133 psi | 86% | 2605 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,843 psi | 87% | 2592 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,452 psi | 87% | 2605 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 84% | 41,655 psi | 87% | 2510 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 40,799 psi | 85% | 2467 fps | 97.3% |
| Shooters World SW4350 | <<locked>> | 88% | 41,423 psi | 87% | 2500 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 42,743 psi | 89% | 2562 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 41,481 psi | 87% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,859 psi | 90% | 2464 fps | 96.5% |
| Somchem S355 | <<locked>> | 84% | 42,496 psi | 89% | 2513 fps | 99.7% |
| Somchem S365 | <<locked>> | 94% | 42,989 psi | 90% | 2625 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 42,612 psi | 89% | 2556 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 86% | 43,163 psi | 90% | 2497 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 41,046 psi | 86% | 2513 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 90% | 43,178 psi | 90% | 2569 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 98% | 41,655 psi | 87% | 2612 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 40,973 psi | 86% | 2497 fps | 99.7% |
| Winchester 760 | <<locked>> | 88% | 41,959 psi | 88% | 2569 fps | 96.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,260 psi | 76% | 2612 fps | 99.8% |
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 3100 | <<locked>> | 94% | 34,606 psi | 72% | 2408 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 29,907 psi | 62% | 2310 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 39,334 psi | 82% | 2434 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,044 psi | 82% | 2454 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,530 psi | 64% | 2323 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,750 psi | 71% | 2438 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,382 psi | 55% | 2238 fps | 95.1% |
| Alliant Reloder-26 | 47.9 gr | 90% | 32,082 psi | 67% | 2454 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 38,856 psi | 81% | 2464 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 80% | 39,479 psi | 82% | 2464 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 39,305 psi | 82% | 2513 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,920 psi | 58% | 2228 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,513 psi | 55% | 1453 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 39,856 psi | 83% | 2464 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 38,841 psi | 81% | 2418 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 29,080 psi | 61% | 2270 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 33,953 psi | 71% | 2320 fps | 95.2% |
| Lovex S070 | <<locked>> | 86% | 38,885 psi | 81% | 2448 fps | 95.6% |
| Norma MRP | <<locked>> | 96% | 39,639 psi | 83% | 2595 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 30,458 psi | 64% | 2313 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 86% | 35,868 psi | 75% | 2448 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,992 psi | 56% | 1493 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,016 psi | 84% | 2451 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,926 psi | 75% | 2497 fps | 100% |
| ReloadSwiss RS 62 | 42.5 gr | 82% | 31,749 psi | 66% | 2375 fps | 95.7% |
| ReloadSwiss RS 70 | 44.3 gr | 84% | 34,084 psi | 71% | 2434 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 36,724 psi | 77% | 2415 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,953 psi | 71% | 2320 fps | 95.2% |
| Shooters World SW4350 | <<locked>> | 86% | 38,885 psi | 81% | 2448 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,565 psi | 78% | 2461 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,841 psi | 81% | 2349 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,869 psi | 79% | 2369 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 37,318 psi | 78% | 2415 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 27,267 psi | 57% | 2270 fps | 97.6% |
| Somchem S385 | <<locked>> | 94% | 39,914 psi | 83% | 2507 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 35,621 psi | 74% | 2356 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 31,691 psi | 66% | 2313 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 31,067 psi | 65% | 2313 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 28,224 psi | 59% | 2310 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,415 psi | 66% | 2290 fps | 97.9% |
| Winchester 760 | <<locked>> | 86% | 39,305 psi | 82% | 2513 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,397 psi | 55% | 2310 fps | 95.6% |
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 42 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 160gr | Woodleigh PP SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,690 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,690 fps. Accurate 3100 gives the best case fill at 100 %, and 42 of the 42 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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. Alliant Reloder-26, ReloadSwiss RS 70, ReloadSwiss RS 62 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 160gr | 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.