Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 140gr | Prvi Partizan PSP BT bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Alliant Reloder-17 and ReloadSwiss RS 62.
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% | 41,611 psi | 87% | 2625 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 41,901 psi | 88% | 2667 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 40,451 psi | 85% | 2713 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 84% | 41,118 psi | 86% | 2635 fps | 97.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,278 psi | 86% | 2766 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 43,149 psi | 90% | 2707 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 82% | 40,930 psi | 86% | 2667 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 94% | 43,033 psi | 90% | 2779 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 90% | 43,004 psi | 90% | 2808 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,709 psi | 77% | 2667 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,727 psi | 85% | 2818 fps | 96.9% |
| Bofors RP3 | <<locked>> | 86% | 43,047 psi | 90% | 2717 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 84% | 41,437 psi | 87% | 2671 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 41,974 psi | 88% | 2710 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 41,727 psi | 87% | 2720 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 73% | 1745 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 43,207 psi | 90% | 2667 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 41,597 psi | 87% | 2717 fps | 97.7% |
| IMR 4895 | <<locked>> | 82% | 41,930 psi | 88% | 2700 fps | 98.7% |
| Lovex S062 | <<locked>> | 84% | 43,047 psi | 90% | 2674 fps | 99.6% |
| Lovex S065 | <<locked>> | 90% | 42,453 psi | 89% | 2664 fps | 96.3% |
| Norma 203B | <<locked>> | 84% | 42,931 psi | 90% | 2710 fps | 98.9% |
| Norma URP | <<locked>> | 92% | 40,582 psi | 85% | 2710 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 84% | 42,656 psi | 89% | 2726 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 94% | 42,308 psi | 88% | 2746 fps | 95.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,795 psi | 75% | 1791 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 43,047 psi | 90% | 2776 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 42,786 psi | 89% | 2812 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 43,062 psi | 90% | 2789 fps | 97.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,538 psi | 85% | 2740 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 82% | 42,235 psi | 88% | 2638 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 88% | 43,207 psi | 90% | 2713 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,453 psi | 89% | 2664 fps | 96.3% |
| Shooters World Precision | <<locked>> | 84% | 43,047 psi | 90% | 2674 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 41,713 psi | 87% | 2713 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 43,279 psi | 90% | 2595 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 41,249 psi | 86% | 2661 fps | 98.9% |
| Somchem S365 | <<locked>> | 96% | 41,133 psi | 86% | 2766 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 82% | 41,756 psi | 87% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,482 psi | 89% | 2631 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,076 psi | 88% | 2651 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 92% | 42,569 psi | 89% | 2710 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 82% | 40,770 psi | 85% | 2618 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 41,829 psi | 87% | 2713 fps | 97.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,566 psi | 83% | 2743 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 42,743 psi | 89% | 2690 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,880 psi | 69% | 2654 fps | 97.3% |
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% | 38,899 psi | 81% | 2575 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,796 psi | 77% | 2569 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 35,273 psi | 74% | 2598 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 36,230 psi | 76% | 2530 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,696 psi | 81% | 2707 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,868 psi | 75% | 2556 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,406 psi | 80% | 2615 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,708 psi | 75% | 2612 fps | 95.9% |
| Alliant Reloder-17 | 42.4 gr | 80% | 30,864 psi | 64% | 2510 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,705 psi | 64% | 2510 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,927 psi | 79% | 2753 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 35,331 psi | 74% | 2556 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 80% | 36,230 psi | 76% | 2556 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,647 psi | 64% | 2451 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,870 psi | 81% | 2661 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,165 psi | 55% | 1558 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,014 psi | 79% | 2562 fps | 97.4% |
| IMR 4831 | <<locked>> | 88% | 34,171 psi | 71% | 2556 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 39,334 psi | 82% | 2644 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 37,927 psi | 79% | 2569 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 39,900 psi | 83% | 2612 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 37,797 psi | 79% | 2605 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 35,694 psi | 75% | 2598 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 37,362 psi | 78% | 2615 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 39,769 psi | 83% | 2694 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,556 psi | 55% | 1598 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,001 psi | 84% | 2713 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 32,837 psi | 69% | 2579 fps | 98.9% |
| ReloadSwiss RS 62 | 46.6 gr | 88% | 35,056 psi | 73% | 2615 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,869 psi | 79% | 2677 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 39,885 psi | 83% | 2589 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 33,228 psi | 69% | 2500 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,900 psi | 83% | 2612 fps | 95.6% |
| Shooters World Precision | <<locked>> | 80% | 37,927 psi | 79% | 2569 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,069 psi | 71% | 2546 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,810 psi | 75% | 2457 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 34,040 psi | 71% | 2503 fps | 97.2% |
| Somchem S365 | 41.2 gr | 82% | 26,324 psi | 55% | 2382 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 39,044 psi | 82% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,827 psi | 83% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,460 psi | 68% | 2444 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 35,114 psi | 73% | 2549 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 38,319 psi | 80% | 2569 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 36,637 psi | 77% | 2602 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 94% | 32,750 psi | 68% | 2585 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,906 psi | 60% | 2362 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,748 psi | 64% | 2582 fps | 96% |
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 47 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 140gr | Prvi Partizan PSP BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,818 fps; across all powders the maximum-charge window runs from 1,745 fps to 2,818 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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. Somchem S365, Alliant Reloder-17, ReloadSwiss RS 62 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 140gr | Prvi Partizan PSP 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.