Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 140gr | Nosler Partition bullet and 47 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 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 2495 | <<locked>> | 82% | 41,568 psi | 87% | 2625 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 41,858 psi | 87% | 2667 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 43,308 psi | 90% | 2766 fps | 98% |
| ADI AR 2208 | <<locked>> | 84% | 41,118 psi | 86% | 2635 fps | 97.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,234 psi | 86% | 2762 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 40,756 psi | 85% | 2661 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 82% | 40,901 psi | 85% | 2667 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 94% | 43,018 psi | 90% | 2779 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 90% | 42,989 psi | 90% | 2808 fps | 99.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,666 psi | 77% | 2667 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,669 psi | 85% | 2818 fps | 96.9% |
| Bofors RP3 | <<locked>> | 86% | 43,004 psi | 90% | 2717 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 84% | 41,394 psi | 86% | 2667 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 41,989 psi | 88% | 2713 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 41,684 psi | 87% | 2720 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 73% | 1745 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 43,163 psi | 90% | 2671 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 41,553 psi | 87% | 2713 fps | 97.7% |
| IMR 4895 | <<locked>> | 82% | 41,887 psi | 88% | 2700 fps | 98.7% |
| Lovex S062 | <<locked>> | 84% | 43,033 psi | 90% | 2674 fps | 99.6% |
| Lovex S065 | <<locked>> | 90% | 42,467 psi | 89% | 2664 fps | 96.3% |
| Norma 203B | <<locked>> | 84% | 43,192 psi | 90% | 2717 fps | 98.9% |
| Norma URP | <<locked>> | 92% | 40,611 psi | 85% | 2710 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 84% | 42,685 psi | 89% | 2726 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 94% | 42,569 psi | 89% | 2753 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,781 psi | 75% | 1791 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 43,033 psi | 90% | 2776 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 43,004 psi | 90% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 43,091 psi | 90% | 2789 fps | 97.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,495 psi | 85% | 2740 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 82% | 42,496 psi | 89% | 2641 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 88% | 43,192 psi | 90% | 2713 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,467 psi | 89% | 2664 fps | 96.3% |
| Shooters World Precision | <<locked>> | 84% | 43,033 psi | 90% | 2674 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 41,684 psi | 87% | 2713 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 43,265 psi | 90% | 2598 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 41,205 psi | 86% | 2664 fps | 98.9% |
| Somchem S365 | <<locked>> | 96% | 41,350 psi | 86% | 2769 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 82% | 41,713 psi | 87% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,453 psi | 89% | 2631 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,090 psi | 88% | 2648 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 92% | 42,525 psi | 89% | 2710 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 82% | 40,770 psi | 85% | 2618 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 41,785 psi | 87% | 2710 fps | 97.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,798 psi | 83% | 2749 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 42,728 psi | 89% | 2690 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,866 psi | 69% | 2651 fps | 97.3% |
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% | 39,146 psi | 82% | 2582 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,985 psi | 77% | 2572 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 35,288 psi | 74% | 2602 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 36,201 psi | 76% | 2530 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,725 psi | 81% | 2707 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,839 psi | 75% | 2556 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,377 psi | 80% | 2612 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,679 psi | 75% | 2608 fps | 95.9% |
| Alliant Reloder-17 | 42.4 gr | 80% | 30,835 psi | 64% | 2510 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,676 psi | 64% | 2507 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,884 psi | 79% | 2753 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 35,360 psi | 74% | 2556 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 80% | 36,201 psi | 76% | 2556 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,906 psi | 60% | 2402 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,841 psi | 81% | 2661 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,150 psi | 55% | 1558 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,985 psi | 79% | 2562 fps | 97.4% |
| IMR 4831 | <<locked>> | 88% | 34,185 psi | 71% | 2556 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 39,305 psi | 82% | 2644 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 37,884 psi | 79% | 2569 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 39,885 psi | 83% | 2612 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 37,768 psi | 79% | 2605 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 35,679 psi | 75% | 2602 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 37,318 psi | 78% | 2618 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 39,798 psi | 83% | 2694 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,556 psi | 55% | 1598 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,248 psi | 84% | 2720 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 32,808 psi | 69% | 2582 fps | 98.9% |
| ReloadSwiss RS 62 | 46.6 gr | 88% | 35,070 psi | 73% | 2615 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 38,087 psi | 80% | 2680 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 39,914 psi | 83% | 2589 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 33,199 psi | 69% | 2500 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,885 psi | 83% | 2612 fps | 95.6% |
| Shooters World Precision | <<locked>> | 80% | 37,884 psi | 79% | 2569 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,272 psi | 72% | 2549 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,810 psi | 75% | 2457 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 34,243 psi | 72% | 2510 fps | 97.3% |
| Somchem S365 | 41.2 gr | 82% | 26,310 psi | 55% | 2382 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 39,030 psi | 82% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,827 psi | 83% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,430 psi | 68% | 2444 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 35,070 psi | 73% | 2549 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 38,290 psi | 80% | 2572 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 36,608 psi | 76% | 2602 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 94% | 32,706 psi | 68% | 2585 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,877 psi | 60% | 2362 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,748 psi | 64% | 2582 fps | 96% |
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 47 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 140gr | Nosler Partition. Alliant Reloder-26 delivers the highest muzzle velocity at 2,818 fps; across all powders the maximum-charge window runs from 1,745 fps to 2,818 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.0 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 62 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 140gr | Nosler Partition 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.