Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 150gr | Norma Soft Point bullet and 41 powders. The key underlying parameters are shown in the table above.
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% | 40,988 psi | 86% | 2618 fps | 96.6% |
| Accurate 4064 | <<locked>> | 82% | 42,105 psi | 88% | 2579 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 40,611 psi | 85% | 2631 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 84% | 43,308 psi | 90% | 2595 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 43,178 psi | 90% | 2621 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,815 psi | 89% | 2694 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 88% | 42,888 psi | 90% | 2723 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,276 psi | 82% | 2651 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 40,828 psi | 85% | 2746 fps | 98% |
| Bofors RP3 | <<locked>> | 84% | 42,917 psi | 90% | 2628 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 41,191 psi | 86% | 2585 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 42,163 psi | 88% | 2635 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,607 psi | 74% | 1693 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,743 psi | 89% | 2579 fps | 99% |
| IMR 4831 | <<locked>> | 92% | 41,655 psi | 87% | 2631 fps | 98.4% |
| Lovex S062 | <<locked>> | 82% | 42,728 psi | 89% | 2582 fps | 99.8% |
| Lovex S065 | <<locked>> | 88% | 42,192 psi | 88% | 2579 fps | 97.1% |
| Lovex S070 | <<locked>> | 90% | 42,670 psi | 89% | 2608 fps | 96.1% |
| Norma 203B | <<locked>> | 82% | 42,931 psi | 90% | 2625 fps | 99.3% |
| Norma URP | <<locked>> | 90% | 40,611 psi | 85% | 2628 fps | 98% |
| Ramshot Big Game | <<locked>> | 82% | 42,583 psi | 89% | 2641 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 92% | 42,511 psi | 89% | 2671 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,998 psi | 75% | 1732 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,408 psi | 87% | 2562 fps | 96.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 42,641 psi | 89% | 2723 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 43,308 psi | 90% | 2707 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 43,221 psi | 90% | 2723 fps | 98% |
| Rottweil R 903 | <<locked>> | 86% | 43,091 psi | 90% | 2625 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 42,192 psi | 88% | 2579 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 42,728 psi | 89% | 2582 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 90% | 42,670 psi | 89% | 2608 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 41,655 psi | 87% | 2628 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 43,047 psi | 90% | 2507 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 41,307 psi | 86% | 2579 fps | 99.4% |
| Somchem S365 | <<locked>> | 94% | 41,495 psi | 87% | 2687 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 41,872 psi | 87% | 2559 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 90% | 42,511 psi | 89% | 2625 fps | 98.3% |
| Vihtavuori N550 | <<locked>> | 90% | 41,814 psi | 87% | 2631 fps | 98% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,989 psi | 90% | 2723 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 42,525 psi | 89% | 2608 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,027 psi | 73% | 2654 fps | 99.2% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 38,261 psi | 80% | 2566 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 39,479 psi | 82% | 2533 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 30,937 psi | 65% | 2415 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 38,450 psi | 80% | 2500 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,043 psi | 79% | 2520 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 82% | 31,502 psi | 66% | 2428 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,706 psi | 68% | 2490 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,848 psi | 60% | 2385 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 92% | 33,112 psi | 69% | 2556 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 37,695 psi | 79% | 2526 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 80% | 38,406 psi | 80% | 2526 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,035 psi | 56% | 2277 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,571 psi | 56% | 1512 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,379 psi | 84% | 2530 fps | 98.6% |
| IMR 4831 | <<locked>> | 84% | 32,140 psi | 67% | 2428 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 40,118 psi | 84% | 2533 fps | 99.6% |
| Lovex S065 | <<locked>> | 82% | 35,259 psi | 74% | 2431 fps | 95% |
| Lovex S070 | <<locked>> | 88% | 40,118 psi | 84% | 2556 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 40,292 psi | 84% | 2572 fps | 99% |
| Norma URP | <<locked>> | 82% | 31,372 psi | 66% | 2415 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 39,711 psi | 83% | 2585 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 37,347 psi | 78% | 2562 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,760 psi | 56% | 1549 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,914 psi | 81% | 2510 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,824 psi | 73% | 2556 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,837 psi | 69% | 2484 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 35,230 psi | 74% | 2543 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 35,418 psi | 74% | 2470 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,259 psi | 74% | 2431 fps | 95% |
| Shooters World Precision | <<locked>> | 80% | 40,118 psi | 84% | 2533 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 40,118 psi | 84% | 2556 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,434 psi | 76% | 2520 fps | 98.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,782 psi | 79% | 2415 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 36,376 psi | 76% | 2477 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 26,324 psi | 55% | 2313 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 34,490 psi | 72% | 2415 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 32,837 psi | 69% | 2421 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 82% | 32,256 psi | 67% | 2421 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 90% | 30,966 psi | 65% | 2461 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,501 psi | 64% | 2339 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,311 psi | 57% | 2405 fps | 95.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 41 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 150gr | Norma Soft Point. Alliant Reloder-26 delivers the highest muzzle velocity at 2,746 fps; across all powders the maximum-charge window runs from 1,693 fps to 2,746 fps. Accurate 3100 gives the best case fill at 100 %, and 41 of the 41 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 1:12.5 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.