Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 125gr | Lehigh Defense Controlled Chaos bullet and 58 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 Hodgdon LEVERevolution.
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>> | 86% | 41,539 psi | 87% | 2772 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 41,829 psi | 87% | 2808 fps | 99.6% |
| Accurate 2520 | <<locked>> | 82% | 41,829 psi | 87% | 2808 fps | 99.6% |
| Accurate 4064 | <<locked>> | 88% | 41,756 psi | 87% | 2812 fps | 99.9% |
| Accurate 4350 | <<locked>> | 98% | 42,902 psi | 90% | 2894 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 82% | 40,799 psi | 85% | 2776 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 88% | 41,858 psi | 87% | 2779 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 42,917 psi | 90% | 2792 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 82% | 42,090 psi | 88% | 2795 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 42,105 psi | 88% | 2907 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 40,785 psi | 85% | 2795 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 86% | 41,568 psi | 87% | 2815 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 43,149 psi | 90% | 2904 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 92% | 40,567 psi | 85% | 2877 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 42,453 psi | 89% | 2828 fps | 96.4% |
| Bofors RP3 | <<locked>> | 90% | 43,221 psi | 90% | 2858 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 82% | 41,046 psi | 86% | 2805 fps | 98.8% |
| Hodgdon H4895 | <<locked>> | 82% | 41,104 psi | 86% | 2789 fps | 97.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,192 psi | 88% | 2841 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 42,221 psi | 88% | 2864 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,505 psi | 72% | 1824 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 41,524 psi | 87% | 2782 fps | 97.8% |
| IMR 3031 | <<locked>> | 86% | 41,640 psi | 87% | 2828 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 40,654 psi | 85% | 2746 fps | 96.6% |
| IMR 4895 | <<locked>> | 86% | 42,569 psi | 89% | 2848 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 82% | 42,917 psi | 90% | 2792 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 84% | 41,829 psi | 87% | 2808 fps | 99.6% |
| Lovex S060 | <<locked>> | 82% | 41,510 psi | 87% | 2720 fps | 97.3% |
| Lovex S062 | <<locked>> | 86% | 40,843 psi | 85% | 2762 fps | 98.4% |
| Norma 201 | <<locked>> | 84% | 42,612 psi | 89% | 2785 fps | 98.7% |
| Norma 202 | <<locked>> | 84% | 42,685 psi | 89% | 2799 fps | 99.9% |
| Norma 203B | <<locked>> | 88% | 43,294 psi | 90% | 2851 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 88% | 43,265 psi | 90% | 2871 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 42,076 psi | 88% | 2812 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,027 psi | 73% | 1873 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 43,091 psi | 90% | 2917 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 43,279 psi | 90% | 2956 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 42,844 psi | 90% | 2910 fps | 96% |
| Rottweil R 902 | <<locked>> | 86% | 42,873 psi | 90% | 2782 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 92% | 43,134 psi | 90% | 2848 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 41,829 psi | 87% | 2808 fps | 99.6% |
| Shooters World Precision | <<locked>> | 86% | 40,843 psi | 85% | 2762 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 42,032 psi | 88% | 2854 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 41,887 psi | 88% | 2795 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 41,713 psi | 87% | 2697 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 41,365 psi | 86% | 2700 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 41,104 psi | 86% | 2700 fps | 99.9% |
| Somchem S341 | <<locked>> | 82% | 40,611 psi | 85% | 2756 fps | 97% |
| Somchem S355 | <<locked>> | 90% | 41,568 psi | 87% | 2802 fps | 97.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,988 psi | 86% | 2894 fps | 99% |
| Vihtavuori N133 | <<locked>> | 82% | 41,814 psi | 87% | 2697 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 42,032 psi | 88% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 43,018 psi | 90% | 2779 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 42,264 psi | 88% | 2785 fps | 99% |
| Vihtavuori N160 | <<locked>> | 96% | 42,670 psi | 89% | 2838 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 82% | 42,830 psi | 89% | 2785 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 86% | 41,524 psi | 87% | 2769 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 40,741 psi | 85% | 2766 fps | 97.6% |
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% | 34,055 psi | 71% | 2618 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,870 psi | 81% | 2749 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 38,870 psi | 81% | 2749 fps | 99.2% |
| Accurate 4064 | <<locked>> | 80% | 32,213 psi | 67% | 2598 fps | 98.6% |
| Accurate 4350 | <<locked>> | 96% | 39,943 psi | 83% | 2835 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 38,247 psi | 80% | 2720 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 37,028 psi | 77% | 2671 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,263 psi | 84% | 2736 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 80% | 39,204 psi | 82% | 2743 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 39,508 psi | 83% | 2844 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,676 psi | 66% | 2579 fps | 95.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,477 psi | 76% | 2697 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 96% | 40,785 psi | 85% | 2848 fps | 95.7% |
| Alliant Reloder-17 | 45.6 gr | 88% | 35,694 psi | 75% | 2759 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 39,798 psi | 83% | 2772 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 30,821 psi | 64% | 2572 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,435 psi | 80% | 2749 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 80% | 38,508 psi | 80% | 2730 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,867 psi | 73% | 2674 fps | 95.7% |
| Hodgdon LEVERevolution | 40.4 gr | 80% | 32,576 psi | 68% | 2635 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 54% | 1634 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,345 psi | 72% | 2615 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 34,185 psi | 71% | 2671 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 36,129 psi | 75% | 2644 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 34,940 psi | 73% | 2674 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 40,263 psi | 84% | 2736 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 80% | 36,608 psi | 76% | 2697 fps | 98.8% |
| Lovex S060 | <<locked>> | 80% | 38,914 psi | 81% | 2664 fps | 96.6% |
| Lovex S062 | <<locked>> | 80% | 33,779 psi | 71% | 2602 fps | 96.5% |
| Norma 201 | <<locked>> | 80% | 37,420 psi | 78% | 2674 fps | 97.6% |
| Norma 202 | <<locked>> | 80% | 37,652 psi | 79% | 2697 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 35,868 psi | 75% | 2687 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 82% | 35,302 psi | 74% | 2690 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,218 psi | 82% | 2749 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,962 psi | 54% | 1673 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 37,623 psi | 79% | 2795 fps | 95.6% |
| ReloadSwiss RS 60 | 41.4 gr | 80% | 29,196 psi | 61% | 2579 fps | 95.5% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 40,147 psi | 84% | 2851 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 35,737 psi | 75% | 2628 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 84% | 33,127 psi | 69% | 2625 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,608 psi | 76% | 2697 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 33,779 psi | 71% | 2602 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,738 psi | 77% | 2733 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,825 psi | 77% | 2684 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,276 psi | 82% | 2648 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,227 psi | 67% | 2503 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 38,551 psi | 81% | 2648 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 37,811 psi | 79% | 2697 fps | 96.2% |
| Somchem S355 | <<locked>> | 84% | 34,374 psi | 72% | 2638 fps | 95.8% |
| Somchem S365 | <<locked>> | 90% | 29,863 psi | 62% | 2605 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 39,407 psi | 82% | 2651 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,664 psi | 72% | 2628 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,549 psi | 74% | 2628 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 28,674 psi | 60% | 2467 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 94% | 39,958 psi | 83% | 2782 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 40,074 psi | 84% | 2730 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 80% | 34,214 psi | 71% | 2612 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,663 psi | 70% | 2598 fps | 95.2% |
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 58 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 125gr | Lehigh Defense Controlled Chaos. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,956 fps; across all powders the maximum-charge window runs from 1,824 fps to 2,956 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, ReloadSwiss RS 14 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, Hodgdon LEVERevolution rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 125gr | Lehigh Defense Controlled Chaos 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.