Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 175gr | Speer Magnum Tip Soft Point 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-26, ReloadSwiss RS 70 and Norma MRP.
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 3100 | <<locked>> | 96% | 40,756 psi | 85% | 2428 fps | 98.1% |
| Accurate 4350 | <<locked>> | 88% | 43,178 psi | 90% | 2480 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,930 psi | 88% | 2487 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 84% | 41,814 psi | 87% | 2503 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 98% | 41,510 psi | 87% | 2503 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,667 psi | 81% | 2470 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 43,207 psi | 90% | 2608 fps | 99.6% |
| Bofors RP15ᴾ | <<locked>> | 100% | 43,105 psi | 90% | 2533 fps | 96.1% |
| Bofors RP7 | <<locked>> | 84% | 42,496 psi | 89% | 2392 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 86% | 42,612 psi | 89% | 2474 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 84% | 43,149 psi | 90% | 2438 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 41,611 psi | 87% | 2428 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 41,814 psi | 87% | 2490 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,114 psi | 75% | 1565 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 42,815 psi | 89% | 2421 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,452 psi | 87% | 2372 fps | 97.1% |
| IMR 4831 | <<locked>> | 88% | 41,336 psi | 86% | 2431 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 41,321 psi | 86% | 2375 fps | 98.4% |
| Lovex S070 | <<locked>> | 86% | 41,814 psi | 87% | 2405 fps | 97.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,856 psi | 81% | 2395 fps | 97.7% |
| Norma MRP | <<locked>> | 96% | 43,134 psi | 90% | 2569 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 42,801 psi | 89% | 2474 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 88% | 41,582 psi | 87% | 2467 fps | 98.2% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 40,814 psi | 85% | 2470 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,637 psi | 77% | 1601 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 41,669 psi | 87% | 2503 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 42,888 psi | 90% | 2503 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,959 psi | 88% | 2513 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 82% | 42,424 psi | 89% | 2411 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 42,888 psi | 90% | 2487 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 84% | 42,496 psi | 89% | 2392 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,321 psi | 86% | 2375 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 86% | 41,814 psi | 87% | 2405 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 43,308 psi | 90% | 2461 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,669 psi | 85% | 2326 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 42,482 psi | 89% | 2484 fps | 96.1% |
| Somchem S355 | <<locked>> | 82% | 42,801 psi | 89% | 2408 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 41,104 psi | 86% | 2477 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 40,683 psi | 85% | 2421 fps | 96.5% |
| Vihtavuori N150 | <<locked>> | 82% | 40,988 psi | 86% | 2349 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 41,858 psi | 87% | 2421 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 98% | 42,670 psi | 89% | 2444 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 86% | 41,104 psi | 86% | 2425 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 96% | 43,192 psi | 90% | 2523 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 41,118 psi | 86% | 2395 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 42,612 psi | 89% | 2474 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,523 psi | 83% | 2592 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 43,207 psi | 90% | 2457 fps | 95.9% |
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>> | 88% | 31,256 psi | 65% | 2234 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 32,764 psi | 68% | 2277 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,779 psi | 68% | 2290 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,477 psi | 76% | 2398 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 23,772 psi | 50% | 2070 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 94% | 32,285 psi | 67% | 2320 fps | 95.9% |
| Alliant Reloder-26 | 44.7 gr | 84% | 28,529 psi | 60% | 2267 fps | 95.1% |
| Bofors RP15 | <<locked>> | 98% | 40,437 psi | 84% | 2480 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 37,652 psi | 79% | 2297 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 34,824 psi | 73% | 2316 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 40,466 psi | 85% | 2385 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,182 psi | 63% | 2195 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 82% | 36,376 psi | 76% | 2379 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,803 psi | 56% | 1394 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 37,942 psi | 79% | 2326 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,885 psi | 81% | 2323 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 31,676 psi | 66% | 2238 fps | 97.3% |
| Lovex S065 | <<locked>> | 80% | 36,419 psi | 76% | 2280 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 34,766 psi | 73% | 2264 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 32,140 psi | 67% | 2254 fps | 95.6% |
| Norma MRP | 46.5 gr | 90% | 35,360 psi | 74% | 2405 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 33,025 psi | 69% | 2277 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 80% | 32,053 psi | 67% | 2264 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 98% | 37,855 psi | 79% | 2411 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 57% | 1430 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,783 psi | 81% | 2451 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,430 psi | 68% | 2293 fps | 97.2% |
| ReloadSwiss RS 70 | 42.2 gr | 80% | 32,126 psi | 67% | 2297 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 80% | 39,726 psi | 83% | 2365 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 92% | 40,132 psi | 84% | 2434 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 37,652 psi | 79% | 2297 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,419 psi | 76% | 2280 fps | 97.2% |
| Shooters World SW4350 | <<locked>> | 80% | 34,766 psi | 73% | 2264 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,582 psi | 85% | 2411 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,708 psi | 75% | 2228 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 39,755 psi | 83% | 2431 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 40,118 psi | 84% | 2362 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 29,631 psi | 62% | 2238 fps | 99.3% |
| Somchem S385 | <<locked>> | 90% | 38,130 psi | 80% | 2372 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 38,377 psi | 80% | 2303 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 34,330 psi | 72% | 2277 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 37,507 psi | 78% | 2346 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 33,895 psi | 71% | 2280 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 25,527 psi | 53% | 2136 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,721 psi | 70% | 2251 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 35,056 psi | 73% | 2323 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,685 psi | 49% | 2136 fps | 95.4% |
| Winchester Supreme 780 | <<locked>> | 94% | 40,437 psi | 84% | 2405 fps | 95.1% |
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 | 175gr | Speer Magnum Tip Soft Point. Alliant Reloder-26 delivers the highest muzzle velocity at 2,608 fps; across all powders the maximum-charge window runs from 1,565 fps to 2,608 fps. Alliant Reloder-25 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 75–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Bofors RP15, 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-26, ReloadSwiss RS 70, Norma MRP rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 175gr | Speer Magnum Tip Soft Point 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.