Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 150gr | Brenneke TOG bullet and 46 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-16 and Somchem S365.
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% | 40,234 psi | 84% | 2598 fps | 96.2% |
| Accurate 4064 | <<locked>> | 82% | 41,365 psi | 86% | 2566 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 42,873 psi | 90% | 2667 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 84% | 42,743 psi | 89% | 2579 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 43,120 psi | 90% | 2717 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,583 psi | 89% | 2605 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,960 psi | 90% | 2618 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,279 psi | 88% | 2677 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 42,119 psi | 88% | 2700 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,638 psi | 81% | 2631 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,946 psi | 90% | 2785 fps | 98.4% |
| Bofors RP3 | <<locked>> | 84% | 42,293 psi | 88% | 2612 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 84% | 43,308 psi | 90% | 2618 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 90% | 42,540 psi | 89% | 2661 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 41,379 psi | 86% | 2615 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,375 psi | 74% | 1683 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,395 psi | 89% | 2566 fps | 98.9% |
| IMR 4831 | <<locked>> | 92% | 41,104 psi | 86% | 2618 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 42,351 psi | 88% | 2569 fps | 99.8% |
| Lovex S065 | <<locked>> | 88% | 41,626 psi | 87% | 2562 fps | 96.9% |
| Lovex S070 | <<locked>> | 90% | 42,148 psi | 88% | 2592 fps | 95.8% |
| Norma 203B | <<locked>> | 82% | 42,279 psi | 88% | 2608 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 42,743 psi | 89% | 2664 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 82% | 41,713 psi | 87% | 2618 fps | 99% |
| Ramshot Hunter | <<locked>> | 92% | 41,785 psi | 87% | 2654 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,056 psi | 75% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,886 psi | 85% | 2546 fps | 95.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 42,090 psi | 88% | 2707 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,482 psi | 89% | 2687 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,569 psi | 89% | 2703 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 86% | 42,467 psi | 89% | 2608 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,626 psi | 87% | 2562 fps | 96.9% |
| Shooters World Precision | <<locked>> | 82% | 42,351 psi | 88% | 2569 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 90% | 42,148 psi | 88% | 2592 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 40,785 psi | 85% | 2608 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,395 psi | 89% | 2493 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 43,091 psi | 90% | 2608 fps | 99.5% |
| Somchem S365 | <<locked>> | 94% | 40,683 psi | 85% | 2667 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 86% | 41,234 psi | 86% | 2546 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 90% | 41,930 psi | 88% | 2612 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 82% | 42,772 psi | 89% | 2566 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 41,031 psi | 86% | 2612 fps | 97.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,163 psi | 88% | 2707 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 41,887 psi | 88% | 2589 fps | 99.6% |
| Winchester 760 | <<locked>> | 90% | 42,844 psi | 90% | 2664 fps | 95.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,505 psi | 72% | 2635 fps | 99% |
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% | 37,536 psi | 78% | 2546 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 38,769 psi | 81% | 2516 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 32,518 psi | 68% | 2451 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 37,869 psi | 79% | 2484 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,437 psi | 84% | 2661 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,405 psi | 78% | 2503 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,277 psi | 84% | 2566 fps | 98.5% |
| Alliant Reloder-16 | 40.9 gr | 84% | 33,040 psi | 69% | 2464 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,227 psi | 67% | 2474 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,485 psi | 60% | 2369 fps | 95.4% |
| Alliant Reloder-26 | 50.5 gr | 94% | 34,882 psi | 73% | 2598 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 37,086 psi | 77% | 2510 fps | 99% |
| Hodgdon H380 | <<locked>> | 80% | 37,797 psi | 79% | 2510 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 88% | 39,914 psi | 83% | 2605 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,311 psi | 59% | 2310 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,498 psi | 55% | 1506 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,755 psi | 83% | 2513 fps | 98.4% |
| IMR 4831 | <<locked>> | 84% | 31,589 psi | 66% | 2411 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 39,682 psi | 83% | 2520 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 36,985 psi | 77% | 2464 fps | 95.5% |
| Lovex S070 | <<locked>> | 88% | 39,595 psi | 83% | 2539 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 39,668 psi | 83% | 2556 fps | 98.8% |
| Norma URP | <<locked>> | 84% | 32,938 psi | 69% | 2451 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 39,146 psi | 82% | 2569 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 39,030 psi | 82% | 2595 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,687 psi | 56% | 1542 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,363 psi | 80% | 2493 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,316 psi | 72% | 2539 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,329 psi | 68% | 2464 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 34,838 psi | 73% | 2526 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 34,809 psi | 73% | 2451 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,985 psi | 77% | 2464 fps | 95.5% |
| Shooters World Precision | <<locked>> | 80% | 39,682 psi | 83% | 2520 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 39,595 psi | 83% | 2539 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,868 psi | 75% | 2503 fps | 97.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,376 psi | 78% | 2402 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 35,723 psi | 75% | 2461 fps | 98.3% |
| Somchem S365 | 39.8 gr | 80% | 26,020 psi | 54% | 2300 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 80% | 33,881 psi | 71% | 2395 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 32,300 psi | 67% | 2402 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 39,929 psi | 83% | 2513 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,866 psi | 71% | 2457 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 90% | 30,443 psi | 64% | 2444 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,095 psi | 63% | 2326 fps | 96.6% |
| Winchester 760 | <<locked>> | 88% | 40,176 psi | 84% | 2612 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,514 psi | 60% | 2444 fps | 95.9% |
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 | 150gr | Brenneke TOG. Alliant Reloder-26 delivers the highest muzzle velocity at 2,785 fps; across all powders the maximum-charge window runs from 1,683 fps to 2,785 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 1:11.5 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. Alliant Reloder-26, Alliant Reloder-16, Somchem S365 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 150gr | Brenneke TOG 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.