Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 150gr | RWS Speed Tip Professional bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, Somchem S365 and ReloadSwiss RS 70.
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 2495 | <<locked>> | 82% | 41,263 psi | 86% | 2510 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 41,423 psi | 87% | 2549 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 42,641 psi | 89% | 2644 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 84% | 40,727 psi | 85% | 2520 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 40,973 psi | 86% | 2648 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 42,960 psi | 90% | 2592 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 84% | 43,308 psi | 90% | 2605 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,554 psi | 89% | 2661 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 90% | 42,409 psi | 89% | 2684 fps | 99.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,405 psi | 76% | 2559 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,045 psi | 84% | 2697 fps | 97.1% |
| Bofors RP3 | <<locked>> | 86% | 42,714 psi | 89% | 2602 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 84% | 41,031 psi | 86% | 2556 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 41,582 psi | 87% | 2595 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 41,292 psi | 86% | 2602 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,331 psi | 74% | 1660 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 42,757 psi | 89% | 2552 fps | 98.7% |
| IMR 4831 | <<locked>> | 94% | 41,220 psi | 86% | 2602 fps | 97.9% |
| IMR 4895 | <<locked>> | 82% | 41,742 psi | 87% | 2585 fps | 98.9% |
| Lovex S062 | <<locked>> | 84% | 42,627 psi | 89% | 2556 fps | 99.7% |
| Lovex S065 | <<locked>> | 90% | 41,974 psi | 88% | 2546 fps | 96.5% |
| Norma 203B | <<locked>> | 84% | 42,627 psi | 89% | 2595 fps | 99% |
| Norma URP | <<locked>> | 94% | 42,888 psi | 90% | 2648 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 84% | 42,264 psi | 88% | 2608 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 94% | 41,959 psi | 88% | 2631 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,723 psi | 75% | 1699 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 42,511 psi | 89% | 2654 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 42,322 psi | 88% | 2694 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 42,540 psi | 89% | 2671 fps | 97.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,757 psi | 89% | 2680 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 82% | 42,148 psi | 88% | 2526 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 88% | 42,583 psi | 89% | 2592 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,974 psi | 88% | 2546 fps | 96.5% |
| Shooters World Precision | <<locked>> | 84% | 42,627 psi | 89% | 2556 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 41,263 psi | 86% | 2598 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 42,830 psi | 89% | 2480 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 40,973 psi | 86% | 2549 fps | 99.1% |
| Somchem S365 | <<locked>> | 96% | 40,611 psi | 85% | 2648 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 82% | 41,205 psi | 86% | 2503 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,003 psi | 88% | 2513 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 41,524 psi | 87% | 2530 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 92% | 42,061 psi | 88% | 2592 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 43,308 psi | 90% | 2556 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 41,234 psi | 86% | 2595 fps | 97.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,189 psi | 82% | 2631 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 42,308 psi | 88% | 2575 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,343 psi | 68% | 2539 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 43,033 psi | 90% | 2592 fps | 99.4% |
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% | 38,725 psi | 81% | 2464 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,593 psi | 76% | 2457 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 32,576 psi | 68% | 2438 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 36,085 psi | 75% | 2425 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,334 psi | 80% | 2592 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,491 psi | 74% | 2444 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,116 psi | 80% | 2503 fps | 97.7% |
| Alliant Reloder-16 | 39.7 gr | 86% | 33,344 psi | 70% | 2448 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 30,647 psi | 64% | 2408 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,356 psi | 63% | 2402 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 34,998 psi | 73% | 2575 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 34,896 psi | 73% | 2444 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 80% | 35,810 psi | 75% | 2444 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,587 psi | 60% | 2297 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,551 psi | 81% | 2549 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,281 psi | 55% | 1483 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,811 psi | 79% | 2454 fps | 97.6% |
| IMR 4831 | <<locked>> | 88% | 33,721 psi | 70% | 2444 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 39,001 psi | 81% | 2533 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 37,739 psi | 79% | 2461 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 37,304 psi | 78% | 2451 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 37,536 psi | 78% | 2493 fps | 98.1% |
| Norma URP | <<locked>> | 86% | 33,083 psi | 69% | 2438 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 36,985 psi | 77% | 2503 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 39,334 psi | 82% | 2579 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,455 psi | 55% | 1516 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,581 psi | 83% | 2595 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 32,648 psi | 68% | 2474 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,693 psi | 72% | 2503 fps | 95.5% |
| ReloadSwiss RS 70 | 45.4 gr | 90% | 37,463 psi | 78% | 2566 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 39,392 psi | 82% | 2474 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 32,895 psi | 69% | 2392 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,304 psi | 78% | 2451 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 37,739 psi | 79% | 2461 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,765 psi | 71% | 2438 fps | 96.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,476 psi | 74% | 2349 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 33,881 psi | 71% | 2402 fps | 97.5% |
| Somchem S365 | 38.6 gr | 82% | 26,020 psi | 54% | 2280 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 38,667 psi | 81% | 2457 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,479 psi | 82% | 2467 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,126 psi | 67% | 2339 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 34,780 psi | 73% | 2441 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 37,884 psi | 79% | 2457 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 33,924 psi | 71% | 2438 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 92% | 30,211 psi | 63% | 2421 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,660 psi | 60% | 2264 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 96% | 28,616 psi | 60% | 2418 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,263 psi | 84% | 2543 fps | 99% |
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 48 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 150gr | RWS Speed Tip Professional. Alliant Reloder-26 delivers the highest muzzle velocity at 2,697 fps; across all powders the maximum-charge window runs from 1,660 fps to 2,697 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 68–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:10.0 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. Alliant Reloder-16, Somchem S365, ReloadSwiss RS 70 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 150gr | RWS Speed Tip Professional 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.