Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 150gr | Norma FMJ SemiP bullet and 44 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Somchem S365 and Ramshot Hunter.
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 3100ᴾ | <<locked>> | 100% | 40,669 psi | 85% | 2612 fps | 96.4% |
| Accurate 4064 | <<locked>> | 82% | 41,669 psi | 87% | 2572 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 40,248 psi | 84% | 2621 fps | 98% |
| ADI AR 2208 | <<locked>> | 84% | 43,236 psi | 90% | 2592 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,801 psi | 89% | 2615 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 82% | 43,207 psi | 90% | 2628 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,438 psi | 89% | 2687 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 42,583 psi | 89% | 2713 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,001 psi | 81% | 2644 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 40,538 psi | 85% | 2736 fps | 97.8% |
| Bofors RP3 | <<locked>> | 84% | 42,815 psi | 89% | 2625 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 40,843 psi | 85% | 2575 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 90% | 43,018 psi | 90% | 2671 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 41,814 psi | 87% | 2625 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 74% | 1690 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,656 psi | 89% | 2572 fps | 99% |
| IMR 4831 | <<locked>> | 92% | 41,321 psi | 86% | 2625 fps | 98.3% |
| Lovex S062 | <<locked>> | 82% | 42,583 psi | 89% | 2575 fps | 99.8% |
| Lovex S065 | <<locked>> | 88% | 42,119 psi | 88% | 2575 fps | 97% |
| Lovex S070 | <<locked>> | 90% | 42,627 psi | 89% | 2605 fps | 96% |
| Norma 203B | <<locked>> | 82% | 42,554 psi | 89% | 2615 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 42,975 psi | 90% | 2671 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 82% | 42,206 psi | 88% | 2631 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 92% | 42,192 psi | 88% | 2664 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,984 psi | 75% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,321 psi | 86% | 2559 fps | 96.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 42,279 psi | 88% | 2717 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,946 psi | 90% | 2700 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,931 psi | 90% | 2713 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 86% | 42,989 psi | 90% | 2621 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 42,119 psi | 88% | 2575 fps | 97% |
| Shooters World Precision | <<locked>> | 82% | 42,583 psi | 89% | 2575 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 90% | 42,627 psi | 89% | 2605 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 41,263 psi | 86% | 2618 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,641 psi | 89% | 2500 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 40,944 psi | 86% | 2572 fps | 99.3% |
| Somchem S365 | <<locked>> | 94% | 41,162 psi | 86% | 2680 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 41,771 psi | 87% | 2556 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 90% | 42,119 psi | 88% | 2618 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 82% | 43,004 psi | 90% | 2572 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 41,510 psi | 87% | 2621 fps | 97.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,627 psi | 89% | 2717 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 42,250 psi | 88% | 2602 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,809 psi | 73% | 2648 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 3100 | <<locked>> | 98% | 37,942 psi | 79% | 2556 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 39,044 psi | 82% | 2523 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 32,764 psi | 68% | 2457 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 38,101 psi | 80% | 2490 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,652 psi | 79% | 2513 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,538 psi | 85% | 2575 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 82% | 31,227 psi | 65% | 2418 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,634 psi | 68% | 2487 fps | 97.5% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,819 psi | 60% | 2382 fps | 95.6% |
| Alliant Reloder-26 | 50.9 gr | 94% | 35,244 psi | 74% | 2612 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 37,304 psi | 78% | 2516 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 80% | 38,290 psi | 80% | 2523 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 88% | 40,335 psi | 84% | 2618 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,919 psi | 56% | 2270 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,498 psi | 55% | 1509 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,987 psi | 84% | 2523 fps | 98.5% |
| IMR 4831 | <<locked>> | 84% | 31,821 psi | 66% | 2418 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 39,972 psi | 84% | 2530 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 37,159 psi | 78% | 2470 fps | 95.6% |
| Lovex S070 | <<locked>> | 88% | 40,016 psi | 84% | 2552 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 39,900 psi | 83% | 2566 fps | 98.9% |
| Norma URP | <<locked>> | 84% | 33,315 psi | 70% | 2464 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 39,378 psi | 82% | 2575 fps | 98.6% |
| Ramshot Hunter | 45.8 gr | 88% | 37,043 psi | 77% | 2552 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,687 psi | 56% | 1545 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,580 psi | 81% | 2503 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,737 psi | 73% | 2552 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,518 psi | 68% | 2474 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 35,186 psi | 74% | 2536 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 35,273 psi | 74% | 2467 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,159 psi | 78% | 2470 fps | 95.6% |
| Shooters World Precision | <<locked>> | 80% | 39,972 psi | 84% | 2530 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 40,016 psi | 84% | 2552 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,100 psi | 75% | 2513 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,666 psi | 79% | 2411 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 35,998 psi | 75% | 2467 fps | 98.4% |
| Somchem S365 | 40.1 gr | 80% | 26,223 psi | 55% | 2310 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 80% | 34,360 psi | 72% | 2411 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 32,518 psi | 68% | 2411 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 40,364 psi | 84% | 2523 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 34,069 psi | 71% | 2464 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 90% | 30,850 psi | 64% | 2457 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,443 psi | 64% | 2336 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,776 psi | 60% | 2457 fps | 96.2% |
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 44 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 150gr | Norma FMJ SemiP. Alliant Reloder-26 delivers the highest muzzle velocity at 2,736 fps; across all powders the maximum-charge window runs from 1,690 fps to 2,736 fps. Accurate 3100 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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. Alliant Reloder-26, Somchem S365, Ramshot Hunter rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 150gr | Norma FMJ SemiP 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.