Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 140gr | Nosler CT FailSafe bullet and 46 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% | 42,119 psi | 88% | 2635 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 42,380 psi | 89% | 2680 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 40,915 psi | 85% | 2723 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 84% | 41,582 psi | 87% | 2648 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,655 psi | 87% | 2776 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 40,944 psi | 86% | 2667 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 41,379 psi | 86% | 2680 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 92% | 40,799 psi | 85% | 2736 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 40,727 psi | 85% | 2762 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,202 psi | 78% | 2684 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,234 psi | 86% | 2835 fps | 97.2% |
| Bofors RP3 | <<locked>> | 84% | 40,756 psi | 85% | 2677 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 84% | 41,858 psi | 87% | 2680 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 42,366 psi | 89% | 2723 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 42,148 psi | 88% | 2730 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,346 psi | 74% | 1752 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 40,973 psi | 86% | 2631 fps | 98.1% |
| IMR 4831 | <<locked>> | 94% | 42,003 psi | 88% | 2726 fps | 97.8% |
| IMR 4895 | <<locked>> | 82% | 42,366 psi | 89% | 2713 fps | 98.8% |
| Lovex S062 | <<locked>> | 82% | 40,857 psi | 85% | 2635 fps | 99.4% |
| Lovex S065 | <<locked>> | 90% | 42,830 psi | 89% | 2674 fps | 96.5% |
| Norma 203B | <<locked>> | 82% | 40,712 psi | 85% | 2667 fps | 98.5% |
| Norma URP | <<locked>> | 92% | 41,017 psi | 86% | 2720 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 84% | 43,047 psi | 90% | 2736 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 94% | 42,902 psi | 90% | 2762 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,679 psi | 75% | 1791 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 40,553 psi | 85% | 2769 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 40,495 psi | 85% | 2740 fps | 97.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,046 psi | 86% | 2756 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 82% | 42,714 psi | 89% | 2648 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 86% | 40,915 psi | 85% | 2671 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,830 psi | 89% | 2674 fps | 96.5% |
| Shooters World Precision | <<locked>> | 82% | 40,857 psi | 85% | 2635 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 42,119 psi | 88% | 2726 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 41,002 psi | 86% | 2562 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 41,669 psi | 87% | 2674 fps | 99% |
| Somchem S365 | <<locked>> | 96% | 41,771 psi | 87% | 2779 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 82% | 41,989 psi | 88% | 2628 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,931 psi | 90% | 2641 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,496 psi | 89% | 2661 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 92% | 42,989 psi | 90% | 2720 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 82% | 41,205 psi | 86% | 2631 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 42,177 psi | 88% | 2723 fps | 97.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,205 psi | 84% | 2759 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 43,279 psi | 90% | 2703 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,098 psi | 69% | 2664 fps | 97.5% |
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% | 39,421 psi | 82% | 2589 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,289 psi | 78% | 2579 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,112 psi | 69% | 2549 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 36,622 psi | 77% | 2543 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,856 psi | 81% | 2713 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,056 psi | 75% | 2562 fps | 98.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,870 psi | 81% | 2628 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 33,895 psi | 71% | 2566 fps | 95.2% |
| Alliant Reloder-17 | 42.8 gr | 80% | 31,169 psi | 65% | 2523 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,980 psi | 65% | 2520 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 35,824 psi | 75% | 2703 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 35,549 psi | 74% | 2566 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 80% | 36,608 psi | 76% | 2569 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,051 psi | 61% | 2408 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,276 psi | 82% | 2674 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,136 psi | 55% | 1562 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,435 psi | 80% | 2575 fps | 97.5% |
| IMR 4831 | <<locked>> | 88% | 34,563 psi | 72% | 2566 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 39,755 psi | 83% | 2657 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 38,363 psi | 80% | 2582 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 37,884 psi | 79% | 2569 fps | 95% |
| Norma 203B | <<locked>> | 80% | 38,232 psi | 80% | 2615 fps | 98% |
| Norma URP | <<locked>> | 86% | 33,837 psi | 71% | 2559 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 37,521 psi | 78% | 2621 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 92% | 40,103 psi | 84% | 2703 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,542 psi | 55% | 1601 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,185 psi | 69% | 2595 fps | 99% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,433 psi | 74% | 2625 fps | 95.4% |
| ReloadSwiss RS 70 | 48.9 gr | 90% | 38,377 psi | 80% | 2694 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 40,089 psi | 84% | 2598 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 33,431 psi | 70% | 2507 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,884 psi | 79% | 2569 fps | 95% |
| Shooters World Precision | <<locked>> | 80% | 38,363 psi | 80% | 2582 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,432 psi | 72% | 2556 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,245 psi | 76% | 2470 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 34,447 psi | 72% | 2516 fps | 97.4% |
| Somchem S365 | 41.6 gr | 82% | 26,629 psi | 56% | 2395 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 39,537 psi | 83% | 2585 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,016 psi | 84% | 2589 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,619 psi | 68% | 2451 fps | 98.1% |
| Vihtavuori N160 | <<locked>> | 86% | 35,230 psi | 74% | 2556 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 38,711 psi | 81% | 2582 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 34,722 psi | 73% | 2562 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 94% | 33,098 psi | 69% | 2595 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,153 psi | 61% | 2375 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,167 psi | 61% | 2533 fps | 95% |
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 46 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 140gr | Nosler CT FailSafe. Alliant Reloder-26 delivers the highest muzzle velocity at 2,835 fps; across all powders the maximum-charge window runs from 1,752 fps to 2,835 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 46 of the 46 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 1:12.5 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 CT FailSafe 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.