Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 150gr | Berger Classic Hybrid Hunter bullet and 46 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% | 40,176 psi | 84% | 2598 fps | 96.2% |
| Accurate 4064 | <<locked>> | 82% | 41,278 psi | 86% | 2562 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 42,743 psi | 89% | 2667 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 84% | 42,627 psi | 89% | 2579 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 43,018 psi | 90% | 2713 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,467 psi | 89% | 2605 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,830 psi | 89% | 2615 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,177 psi | 88% | 2677 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 42,032 psi | 88% | 2700 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,580 psi | 81% | 2631 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,844 psi | 90% | 2782 fps | 98.3% |
| Bofors RP3 | <<locked>> | 84% | 42,163 psi | 88% | 2608 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 84% | 43,192 psi | 90% | 2618 fps | 98% |
| Hodgdon H414 | <<locked>> | 90% | 42,453 psi | 89% | 2657 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 41,292 psi | 86% | 2612 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,462 psi | 74% | 1686 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,264 psi | 88% | 2562 fps | 98.9% |
| IMR 4831 | <<locked>> | 92% | 41,002 psi | 86% | 2615 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 42,206 psi | 88% | 2569 fps | 99.8% |
| Lovex S065 | <<locked>> | 88% | 41,524 psi | 87% | 2559 fps | 96.8% |
| Lovex S070 | <<locked>> | 90% | 42,061 psi | 88% | 2589 fps | 95.8% |
| Norma 203B | <<locked>> | 82% | 42,206 psi | 88% | 2605 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 42,641 psi | 89% | 2661 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 82% | 41,611 psi | 87% | 2618 fps | 99% |
| Ramshot Hunter | <<locked>> | 92% | 41,713 psi | 87% | 2651 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,868 psi | 75% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,785 psi | 85% | 2543 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 41,989 psi | 88% | 2707 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,395 psi | 89% | 2687 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,482 psi | 89% | 2700 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 86% | 42,351 psi | 88% | 2605 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,524 psi | 87% | 2559 fps | 96.8% |
| Shooters World Precision | <<locked>> | 82% | 42,206 psi | 88% | 2569 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 90% | 42,061 psi | 88% | 2589 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 40,669 psi | 85% | 2605 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,264 psi | 88% | 2490 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 42,975 psi | 90% | 2605 fps | 99.5% |
| Somchem S365 | <<locked>> | 94% | 40,596 psi | 85% | 2664 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 86% | 41,133 psi | 86% | 2543 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 90% | 41,829 psi | 87% | 2608 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 82% | 42,656 psi | 89% | 2562 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 40,944 psi | 86% | 2608 fps | 97.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,047 psi | 88% | 2703 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 41,829 psi | 87% | 2589 fps | 99.5% |
| Winchester 760 | <<locked>> | 90% | 42,743 psi | 89% | 2664 fps | 95.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,476 psi | 72% | 2631 fps | 98.9% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 37,463 psi | 78% | 2546 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 38,653 psi | 81% | 2513 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 32,401 psi | 68% | 2448 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 37,739 psi | 79% | 2480 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,335 psi | 84% | 2657 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,304 psi | 78% | 2500 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,147 psi | 84% | 2562 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,938 psi | 69% | 2461 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,140 psi | 67% | 2470 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,413 psi | 59% | 2369 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 94% | 34,838 psi | 73% | 2598 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 36,956 psi | 77% | 2507 fps | 99% |
| Hodgdon H380 | <<locked>> | 80% | 37,971 psi | 79% | 2513 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 39,827 psi | 83% | 2605 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,253 psi | 59% | 2306 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 55% | 1503 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,624 psi | 83% | 2513 fps | 98.4% |
| IMR 4831 | <<locked>> | 84% | 31,488 psi | 66% | 2408 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 39,595 psi | 83% | 2516 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 36,869 psi | 77% | 2464 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 39,508 psi | 83% | 2536 fps | 95% |
| Norma 203B | <<locked>> | 80% | 39,566 psi | 83% | 2552 fps | 98.8% |
| Norma URP | <<locked>> | 84% | 32,822 psi | 69% | 2448 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 39,030 psi | 82% | 2566 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 38,957 psi | 81% | 2592 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,745 psi | 56% | 1542 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,319 psi | 80% | 2493 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,214 psi | 71% | 2536 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,256 psi | 67% | 2464 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 37,014 psi | 77% | 2579 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 34,940 psi | 73% | 2457 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,869 psi | 77% | 2464 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 39,595 psi | 83% | 2516 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 39,508 psi | 83% | 2536 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,752 psi | 75% | 2500 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,289 psi | 78% | 2402 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 35,650 psi | 74% | 2457 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 25,947 psi | 54% | 2297 fps | 96% |
| Vihtavuori N150 | <<locked>> | 80% | 33,997 psi | 71% | 2398 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 32,242 psi | 67% | 2402 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 40,045 psi | 84% | 2516 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,779 psi | 71% | 2454 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 90% | 30,356 psi | 63% | 2441 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,052 psi | 63% | 2323 fps | 96.5% |
| Winchester 760 | <<locked>> | 88% | 40,089 psi | 84% | 2608 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,471 psi | 59% | 2441 fps | 95.8% |
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 | 150gr | Berger Classic Hybrid Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 2,782 fps; across all powders the maximum-charge window runs from 1,686 fps to 2,782 fps. Accurate 3100 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 72–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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.