Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .287 | 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% | 42,554 psi | 89% | 2562 fps | 97.5% |
| Accurate 4350 | <<locked>> | 90% | 42,061 psi | 88% | 2569 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 82% | 41,959 psi | 88% | 2484 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 41,698 psi | 87% | 2503 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 41,307 psi | 86% | 2579 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 86% | 41,263 psi | 86% | 2602 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,538 psi | 85% | 2592 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,192 psi | 88% | 2694 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 41,539 psi | 87% | 2513 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 42,206 psi | 88% | 2516 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 88% | 42,018 psi | 88% | 2569 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 40,756 psi | 85% | 2520 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,795 psi | 75% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 42,482 psi | 89% | 2513 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,162 psi | 86% | 2464 fps | 95.9% |
| IMR 4831 | <<locked>> | 92% | 43,105 psi | 90% | 2572 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 40,828 psi | 85% | 2467 fps | 97.3% |
| Lovex S070 | <<locked>> | 88% | 41,220 psi | 86% | 2493 fps | 96.3% |
| Norma MRP | <<locked>> | 98% | 42,351 psi | 88% | 2651 fps | 96.3% |
| Norma URP | <<locked>> | 90% | 41,916 psi | 88% | 2566 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 41,002 psi | 86% | 2559 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,260 psi | 76% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,656 psi | 89% | 2503 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 41,205 psi | 86% | 2605 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,611 psi | 87% | 2589 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,495 psi | 87% | 2605 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 84% | 41,684 psi | 87% | 2510 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 40,828 psi | 85% | 2467 fps | 97.3% |
| Shooters World SW4350 | <<locked>> | 88% | 41,220 psi | 86% | 2493 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 42,801 psi | 89% | 2562 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 41,263 psi | 86% | 2388 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,931 psi | 90% | 2464 fps | 96.5% |
| Somchem S355 | <<locked>> | 84% | 42,235 psi | 88% | 2510 fps | 99.7% |
| Somchem S365 | <<locked>> | 94% | 42,786 psi | 89% | 2621 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 42,641 psi | 89% | 2556 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 86% | 43,207 psi | 90% | 2497 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 41,060 psi | 86% | 2513 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 90% | 43,221 psi | 90% | 2569 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 98% | 41,684 psi | 87% | 2612 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 40,785 psi | 85% | 2490 fps | 99.7% |
| Winchester 760 | <<locked>> | 88% | 42,018 psi | 88% | 2569 fps | 96.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,318 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% | 29,921 psi | 63% | 2310 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 39,363 psi | 82% | 2434 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,088 psi | 82% | 2454 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,371 psi | 63% | 2320 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,794 psi | 71% | 2438 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,397 psi | 55% | 2238 fps | 95.1% |
| Alliant Reloder-26 | 47.8 gr | 90% | 31,923 psi | 67% | 2451 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 38,870 psi | 81% | 2464 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 80% | 39,523 psi | 83% | 2464 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 39,102 psi | 82% | 2510 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,949 psi | 58% | 2228 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,542 psi | 55% | 1453 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 39,871 psi | 83% | 2464 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 38,885 psi | 81% | 2418 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 29,095 psi | 61% | 2270 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 33,997 psi | 71% | 2323 fps | 95.2% |
| Lovex S070 | <<locked>> | 86% | 38,899 psi | 81% | 2448 fps | 95.6% |
| Norma MRP | <<locked>> | 96% | 39,465 psi | 82% | 2592 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 30,255 psi | 63% | 2310 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 86% | 35,911 psi | 75% | 2448 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,021 psi | 56% | 1493 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,059 psi | 84% | 2451 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,940 psi | 75% | 2497 fps | 100% |
| ReloadSwiss RS 62 | 42.5 gr | 82% | 31,749 psi | 66% | 2375 fps | 95.7% |
| ReloadSwiss RS 70 | 44.2 gr | 84% | 33,881 psi | 71% | 2431 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 36,492 psi | 76% | 2408 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,997 psi | 71% | 2323 fps | 95.2% |
| Shooters World SW4350 | <<locked>> | 86% | 38,899 psi | 81% | 2448 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,579 psi | 79% | 2461 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,885 psi | 81% | 2349 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,637 psi | 79% | 2365 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 37,333 psi | 78% | 2415 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 27,122 psi | 57% | 2264 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 39,943 psi | 83% | 2507 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 35,447 psi | 74% | 2352 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 31,734 psi | 66% | 2313 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 31,082 psi | 65% | 2313 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 28,239 psi | 59% | 2310 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,459 psi | 66% | 2290 fps | 97.9% |
| Winchester 760 | <<locked>> | 86% | 39,378 psi | 82% | 2516 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,440 psi | 55% | 2310 fps | 95.7% |
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 .287 | 160gr | Woodleigh PP SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,694 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,694 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 0.287" 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 .287 | 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.