Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 140gr | NorthFork Bonded Core 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 Alliant Reloder-16.
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% | 40,654 psi | 85% | 2602 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 40,959 psi | 86% | 2644 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 42,264 psi | 88% | 2740 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 86% | 43,076 psi | 90% | 2667 fps | 98.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 43,279 psi | 90% | 2799 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 42,380 psi | 89% | 2687 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,844 psi | 90% | 2700 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,177 psi | 88% | 2753 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 42,148 psi | 88% | 2782 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,984 psi | 75% | 2644 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,871 psi | 83% | 2789 fps | 96.4% |
| Bofors RP3 | <<locked>> | 86% | 42,235 psi | 88% | 2694 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 43,178 psi | 90% | 2697 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 41,104 psi | 86% | 2687 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 40,669 psi | 85% | 2690 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 73% | 1736 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 43,308 psi | 90% | 2677 fps | 99.1% |
| IMR 4064 | <<locked>> | 84% | 42,424 psi | 89% | 2644 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 43,178 psi | 90% | 2740 fps | 97.9% |
| IMR 4895 | <<locked>> | 82% | 41,118 psi | 86% | 2677 fps | 98.5% |
| Lovex S062 | <<locked>> | 84% | 42,250 psi | 88% | 2651 fps | 99.4% |
| Lovex S065 | <<locked>> | 90% | 41,539 psi | 87% | 2635 fps | 95.9% |
| Norma 203B | <<locked>> | 84% | 42,163 psi | 88% | 2687 fps | 98.6% |
| Norma URP | <<locked>> | 94% | 42,366 psi | 89% | 2736 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 84% | 41,727 psi | 87% | 2700 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,505 psi | 74% | 1775 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,858 psi | 87% | 2746 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,916 psi | 88% | 2785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 41,945 psi | 88% | 2759 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,438 psi | 89% | 2772 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 82% | 41,669 psi | 87% | 2618 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 88% | 42,163 psi | 88% | 2684 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,539 psi | 87% | 2635 fps | 95.9% |
| Shooters World Precision | <<locked>> | 84% | 42,250 psi | 88% | 2651 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 40,756 psi | 85% | 2690 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,989 psi | 90% | 2677 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 42,496 psi | 89% | 2575 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 42,902 psi | 90% | 2687 fps | 99.1% |
| Somchem S365 | <<locked>> | 98% | 43,018 psi | 90% | 2795 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 82% | 40,799 psi | 85% | 2598 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 41,669 psi | 87% | 2608 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 41,118 psi | 86% | 2625 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 92% | 41,655 psi | 87% | 2684 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 84% | 42,670 psi | 89% | 2648 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 40,930 psi | 86% | 2687 fps | 96.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,696 psi | 81% | 2720 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 41,829 psi | 87% | 2664 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,140 psi | 67% | 2618 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 42,380 psi | 89% | 2684 fps | 99.1% |
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% | 38,218 psi | 80% | 2559 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,143 psi | 76% | 2549 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 34,272 psi | 72% | 2569 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 35,737 psi | 75% | 2510 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,797 psi | 79% | 2674 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,070 psi | 73% | 2530 fps | 97.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,608 psi | 79% | 2589 fps | 97.1% |
| Alliant Reloder-16 | 42.5 gr | 88% | 35,099 psi | 73% | 2585 fps | 95.4% |
| Alliant Reloder-17 | 41.6 gr | 80% | 30,284 psi | 63% | 2487 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,763 psi | 66% | 2530 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,057 psi | 77% | 2720 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 34,548 psi | 72% | 2533 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 37,898 psi | 79% | 2589 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,037 psi | 63% | 2428 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,087 psi | 80% | 2638 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,252 psi | 55% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,553 psi | 85% | 2621 fps | 98.6% |
| IMR 4064 | <<locked>> | 80% | 37,463 psi | 78% | 2543 fps | 97.1% |
| IMR 4831 | <<locked>> | 90% | 35,578 psi | 74% | 2582 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 38,508 psi | 80% | 2621 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 37,362 psi | 78% | 2549 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 39,001 psi | 81% | 2582 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 36,999 psi | 77% | 2579 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 34,838 psi | 73% | 2572 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 36,434 psi | 76% | 2589 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,382 psi | 55% | 1588 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,088 psi | 82% | 2687 fps | 97.5% |
| ReloadSwiss RS 60 | 41.6 gr | 80% | 32,242 psi | 67% | 2556 fps | 98.6% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,550 psi | 76% | 2641 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,581 psi | 83% | 2710 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 39,073 psi | 82% | 2566 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 32,445 psi | 68% | 2474 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,001 psi | 81% | 2582 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 37,362 psi | 78% | 2549 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,417 psi | 70% | 2520 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,321 psi | 84% | 2625 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,259 psi | 74% | 2441 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 33,518 psi | 70% | 2487 fps | 96.9% |
| Somchem S365 | <<locked>> | 84% | 27,456 psi | 57% | 2415 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 38,377 psi | 80% | 2556 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,015 psi | 82% | 2559 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,705 psi | 66% | 2421 fps | 97.7% |
| Vihtavuori N160 | <<locked>> | 88% | 36,550 psi | 76% | 2575 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 37,594 psi | 79% | 2549 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,752 psi | 75% | 2575 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 94% | 31,894 psi | 67% | 2556 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,226 psi | 63% | 2392 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,037 psi | 63% | 2549 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,755 psi | 83% | 2631 fps | 98.6% |
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 49 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 140gr | NorthFork Bonded Core. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,799 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,799 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 140.0 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, Alliant Reloder-16 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 140gr | NorthFork Bonded Core 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.