Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 140gr | Nosler Solid Base bullet and 45 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% | 42,453 psi | 89% | 2644 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 42,685 psi | 89% | 2687 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 41,466 psi | 87% | 2736 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 84% | 41,829 psi | 87% | 2657 fps | 98.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 42,163 psi | 88% | 2792 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 41,205 psi | 86% | 2677 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 41,655 psi | 87% | 2690 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 92% | 41,017 psi | 86% | 2743 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 88% | 40,959 psi | 86% | 2772 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,347 psi | 78% | 2690 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,597 psi | 87% | 2844 fps | 97.4% |
| Bofors RP3 | <<locked>> | 84% | 41,060 psi | 86% | 2684 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 84% | 42,119 psi | 88% | 2690 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 42,873 psi | 90% | 2736 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 42,424 psi | 89% | 2740 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,302 psi | 74% | 1755 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 41,263 psi | 86% | 2638 fps | 98.2% |
| IMR 4831 | <<locked>> | 94% | 42,496 psi | 89% | 2740 fps | 98% |
| IMR 4895 | <<locked>> | 82% | 42,641 psi | 89% | 2720 fps | 98.9% |
| Lovex S062 | <<locked>> | 82% | 41,147 psi | 86% | 2644 fps | 99.4% |
| Lovex S065 | <<locked>> | 90% | 43,062 psi | 90% | 2680 fps | 96.6% |
| Norma 203B | <<locked>> | 82% | 41,002 psi | 86% | 2677 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 41,220 psi | 86% | 2730 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 82% | 40,727 psi | 85% | 2694 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,650 psi | 74% | 1795 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 40,741 psi | 85% | 2779 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 40,988 psi | 86% | 2753 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,220 psi | 86% | 2762 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 82% | 43,018 psi | 90% | 2657 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 86% | 41,191 psi | 86% | 2680 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 43,062 psi | 90% | 2680 fps | 96.6% |
| Shooters World Precision | <<locked>> | 82% | 41,147 psi | 86% | 2644 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 42,337 psi | 88% | 2733 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 41,278 psi | 86% | 2569 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 41,945 psi | 88% | 2684 fps | 99.1% |
| Somchem S365 | <<locked>> | 96% | 41,989 psi | 88% | 2789 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 82% | 42,322 psi | 88% | 2635 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 43,207 psi | 90% | 2651 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,757 psi | 89% | 2667 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 90% | 40,538 psi | 85% | 2674 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 82% | 41,452 psi | 87% | 2638 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 42,699 psi | 89% | 2736 fps | 97.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,683 psi | 85% | 2772 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 40,640 psi | 85% | 2654 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,388 psi | 70% | 2677 fps | 97.8% |
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 2495 | <<locked>> | 80% | 39,769 psi | 83% | 2595 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,623 psi | 79% | 2589 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,649 psi | 70% | 2566 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 36,898 psi | 77% | 2552 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,363 psi | 82% | 2730 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,347 psi | 76% | 2572 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,146 psi | 82% | 2638 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,098 psi | 71% | 2575 fps | 95.4% |
| Alliant Reloder-17 | 43.1 gr | 80% | 31,386 psi | 66% | 2533 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,125 psi | 65% | 2526 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,201 psi | 76% | 2717 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 35,853 psi | 75% | 2575 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 80% | 36,883 psi | 77% | 2579 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,298 psi | 61% | 2418 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,595 psi | 83% | 2680 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,165 psi | 55% | 1565 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,740 psi | 81% | 2585 fps | 97.7% |
| IMR 4831 | <<locked>> | 86% | 32,634 psi | 68% | 2523 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 40,074 psi | 84% | 2667 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 38,667 psi | 81% | 2592 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 38,159 psi | 80% | 2579 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 38,508 psi | 80% | 2625 fps | 98.1% |
| Norma URP | <<locked>> | 86% | 34,098 psi | 71% | 2569 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 37,985 psi | 79% | 2638 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,556 psi | 55% | 1604 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,402 psi | 70% | 2602 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,853 psi | 75% | 2638 fps | 95.7% |
| ReloadSwiss RS 70 | 49.2 gr | 90% | 38,537 psi | 81% | 2700 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 40,408 psi | 84% | 2608 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 33,721 psi | 70% | 2516 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,159 psi | 80% | 2579 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 38,667 psi | 81% | 2592 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,708 psi | 73% | 2566 fps | 96.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,550 psi | 76% | 2480 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 34,737 psi | 73% | 2526 fps | 97.5% |
| Somchem S365 | 41.9 gr | 82% | 26,818 psi | 56% | 2405 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 39,900 psi | 83% | 2592 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,321 psi | 84% | 2598 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,880 psi | 69% | 2461 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 86% | 35,708 psi | 75% | 2569 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 38,957 psi | 81% | 2589 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 34,940 psi | 73% | 2569 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 92% | 31,241 psi | 65% | 2549 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,312 psi | 61% | 2382 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,457 psi | 62% | 2546 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 45 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 140gr | Nosler Solid Base. Alliant Reloder-26 delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,755 fps to 2,844 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 45 of the 45 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 1:12.5 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 | Nosler Solid Base 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.