Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 150gr | Prvi Partizan HP BT bullet and 45 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and Alliant Reloder-16.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 43,236 psi | 90% | 2552 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 39,595 psi | 83% | 2582 fps | 95.9% |
| Accurate 4064 | <<locked>> | 82% | 40,814 psi | 85% | 2549 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 42,061 psi | 88% | 2648 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 84% | 42,250 psi | 88% | 2566 fps | 98.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 42,656 psi | 89% | 2700 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,076 psi | 88% | 2592 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,424 psi | 89% | 2605 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 41,611 psi | 87% | 2657 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 88% | 41,727 psi | 87% | 2690 fps | 99.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,072 psi | 80% | 2615 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,409 psi | 89% | 2769 fps | 98.1% |
| Bofors RP3 | <<locked>> | 84% | 41,756 psi | 87% | 2598 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 84% | 42,830 psi | 89% | 2605 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 40,944 psi | 86% | 2598 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 43,221 psi | 90% | 2651 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,331 psi | 74% | 1677 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 41,858 psi | 87% | 2549 fps | 98.7% |
| IMR 4831 | <<locked>> | 94% | 43,134 psi | 90% | 2651 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 41,785 psi | 87% | 2556 fps | 99.7% |
| Lovex S065 | <<locked>> | 88% | 41,191 psi | 86% | 2549 fps | 96.7% |
| Norma 203B | <<locked>> | 82% | 41,756 psi | 87% | 2592 fps | 99.1% |
| Norma URP | <<locked>> | 92% | 42,018 psi | 88% | 2644 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 82% | 41,234 psi | 86% | 2605 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 92% | 41,162 psi | 86% | 2635 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,027 psi | 75% | 1722 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,062 psi | 90% | 2585 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 41,408 psi | 87% | 2690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 41,785 psi | 87% | 2671 fps | 98% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,989 psi | 88% | 2684 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 86% | 41,916 psi | 88% | 2592 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,191 psi | 86% | 2549 fps | 96.7% |
| Shooters World Precision | <<locked>> | 82% | 41,785 psi | 87% | 2556 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 43,004 psi | 90% | 2644 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 41,858 psi | 87% | 2477 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 42,583 psi | 89% | 2595 fps | 99.4% |
| Somchem S365 | <<locked>> | 96% | 42,772 psi | 89% | 2700 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 43,207 psi | 90% | 2546 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 40,785 psi | 85% | 2533 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 90% | 41,220 psi | 86% | 2592 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 82% | 42,308 psi | 88% | 2552 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 40,611 psi | 85% | 2598 fps | 97.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,423 psi | 87% | 2687 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 41,321 psi | 86% | 2572 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,084 psi | 71% | 2615 fps | 98.7% |
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% | 40,393 psi | 84% | 2507 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 36,883 psi | 77% | 2526 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 38,174 psi | 80% | 2500 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 32,053 psi | 67% | 2434 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 37,362 psi | 78% | 2467 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,016 psi | 84% | 2644 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,883 psi | 77% | 2487 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,784 psi | 83% | 2552 fps | 98.3% |
| Alliant Reloder-16 | 40.4 gr | 84% | 32,634 psi | 68% | 2448 fps | 95.4% |
| Alliant Reloder-17 | 41.4 gr | 80% | 31,850 psi | 67% | 2457 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,181 psi | 59% | 2356 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 94% | 34,418 psi | 72% | 2582 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 36,550 psi | 76% | 2493 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 80% | 37,362 psi | 78% | 2493 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,137 psi | 59% | 2300 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,190 psi | 84% | 2595 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,353 psi | 55% | 1499 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,218 psi | 82% | 2497 fps | 98.2% |
| IMR 4831 | <<locked>> | 84% | 31,111 psi | 65% | 2392 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 39,160 psi | 82% | 2503 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 36,535 psi | 76% | 2451 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 39,146 psi | 82% | 2543 fps | 98.6% |
| Norma URP | <<locked>> | 84% | 32,460 psi | 68% | 2434 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 38,638 psi | 81% | 2552 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 38,682 psi | 81% | 2582 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,803 psi | 56% | 1539 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,422 psi | 84% | 2533 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,924 psi | 71% | 2523 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,084 psi | 71% | 2503 fps | 95.7% |
| ReloadSwiss RS 70 | 46.3 gr | 88% | 36,782 psi | 77% | 2569 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 34,519 psi | 72% | 2441 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,535 psi | 76% | 2451 fps | 95.2% |
| Shooters World Precision | <<locked>> | 80% | 39,160 psi | 82% | 2503 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,404 psi | 74% | 2490 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,883 psi | 77% | 2388 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 35,244 psi | 74% | 2444 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 25,643 psi | 54% | 2283 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 40,350 psi | 84% | 2500 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,663 psi | 70% | 2388 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 84% | 34,069 psi | 71% | 2441 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 39,436 psi | 82% | 2500 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,460 psi | 70% | 2441 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 90% | 30,052 psi | 63% | 2428 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,805 psi | 62% | 2313 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,108 psi | 59% | 2421 fps | 95.4% |
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 45 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 150gr | Prvi Partizan HP BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,769 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,769 fps. Accurate 3100 gives the best case fill at 100 %, and 45 of the 45 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 71–90 %, 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. ReloadSwiss RS 70, Alliant Reloder-17, Alliant Reloder-16 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 150gr | Prvi Partizan HP BT 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.