Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 175gr | Speer Deep Curl Soft Point bullet and 47 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.
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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 42,830 psi | 89% | 2457 fps | 98.4% |
| Accurate 4350 | <<locked>> | 88% | 42,235 psi | 88% | 2461 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,379 psi | 86% | 2470 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 41,249 psi | 86% | 2487 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,207 psi | 90% | 2484 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,033 psi | 90% | 2526 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,294 psi | 90% | 2530 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,101 psi | 80% | 2451 fps | 98% |
| Alliant Reloder-26 | <<locked>> | 96% | 42,221 psi | 88% | 2585 fps | 99.5% |
| Bofors RP5 | <<locked>> | 98% | 43,033 psi | 90% | 2526 fps | 96.1% |
| Bofors RP7 | <<locked>> | 84% | 41,945 psi | 88% | 2375 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 86% | 41,785 psi | 87% | 2454 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 84% | 42,598 psi | 89% | 2421 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 41,031 psi | 86% | 2411 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 41,162 psi | 86% | 2470 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,897 psi | 75% | 1555 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 42,293 psi | 88% | 2405 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,901 psi | 85% | 2356 fps | 96.8% |
| IMR 4831 | <<locked>> | 90% | 43,250 psi | 90% | 2461 fps | 99.6% |
| Lovex S065 | <<locked>> | 86% | 43,163 psi | 90% | 2402 fps | 98.6% |
| Lovex S070 | <<locked>> | 86% | 41,292 psi | 86% | 2388 fps | 97.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,072 psi | 80% | 2372 fps | 97.4% |
| Norma MRP | <<locked>> | 96% | 42,467 psi | 89% | 2549 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 42,192 psi | 88% | 2457 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 40,843 psi | 85% | 2448 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 77% | 1598 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 40,843 psi | 85% | 2484 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 42,032 psi | 88% | 2480 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,249 psi | 86% | 2493 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 82% | 41,756 psi | 87% | 2395 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 42,105 psi | 88% | 2467 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 84% | 41,945 psi | 88% | 2375 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 43,163 psi | 90% | 2402 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 86% | 41,292 psi | 86% | 2388 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 42,714 psi | 89% | 2444 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,569 psi | 89% | 2352 fps | 97.4% |
| Somchem S355 | <<locked>> | 82% | 42,148 psi | 88% | 2395 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 43,091 psi | 90% | 2507 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 42,641 psi | 89% | 2451 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 84% | 42,873 psi | 90% | 2375 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 40,988 psi | 86% | 2402 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 98% | 41,989 psi | 88% | 2428 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 88% | 43,294 psi | 90% | 2457 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 96% | 42,308 psi | 88% | 2503 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 40,480 psi | 85% | 2379 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 42,076 psi | 88% | 2461 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,972 psi | 81% | 2572 fps | 100% |
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>> | 90% | 32,706 psi | 68% | 2264 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 32,169 psi | 67% | 2260 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,256 psi | 67% | 2270 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,926 psi | 75% | 2382 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 40,843 psi | 85% | 2438 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 40,321 psi | 84% | 2474 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,903 psi | 52% | 2100 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 31,734 psi | 66% | 2300 fps | 95.4% |
| Alliant Reloder-26 | 45.1 gr | 86% | 30,023 psi | 63% | 2303 fps | 95.8% |
| Bofors RP5 | <<locked>> | 96% | 40,321 psi | 84% | 2474 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 37,086 psi | 77% | 2277 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 34,272 psi | 72% | 2300 fps | 95% |
| Hodgdon H4350 | <<locked>> | 82% | 39,914 psi | 83% | 2372 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,660 psi | 62% | 2178 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 84% | 38,348 psi | 80% | 2415 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,745 psi | 56% | 1388 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 37,202 psi | 78% | 2306 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,595 psi | 81% | 2310 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 31,314 psi | 65% | 2224 fps | 97% |
| Lovex S065 | <<locked>> | 80% | 36,071 psi | 75% | 2267 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 34,229 psi | 72% | 2244 fps | 95.2% |
| Lovex S071 | <<locked>> | 94% | 31,618 psi | 66% | 2238 fps | 95.2% |
| Norma MRP | 46.8 gr | 92% | 37,057 psi | 77% | 2438 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 32,460 psi | 68% | 2260 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 82% | 33,678 psi | 70% | 2297 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 57% | 1424 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,218 psi | 80% | 2434 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,894 psi | 67% | 2277 fps | 96.9% |
| ReloadSwiss RS 70 | 41.6 gr | 80% | 31,720 psi | 66% | 2280 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 39,030 psi | 82% | 2349 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 92% | 39,392 psi | 82% | 2415 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 37,086 psi | 77% | 2277 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,071 psi | 75% | 2267 fps | 97% |
| Shooters World SW4350 | <<locked>> | 80% | 34,229 psi | 72% | 2244 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,972 psi | 84% | 2395 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,157 psi | 73% | 2211 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 39,755 psi | 83% | 2352 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 29,109 psi | 61% | 2221 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 37,681 psi | 79% | 2356 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 37,768 psi | 79% | 2287 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 33,736 psi | 70% | 2257 fps | 97.5% |
| Vihtavuori N165 | <<locked>> | 96% | 39,320 psi | 82% | 2375 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 33,359 psi | 70% | 2264 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 26,789 psi | 56% | 2169 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,286 psi | 70% | 2238 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 34,490 psi | 72% | 2306 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 24,845 psi | 52% | 2175 fps | 96.3% |
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 | 175gr | Speer Deep Curl Soft Point. Alliant Reloder-26 delivers the highest muzzle velocity at 2,585 fps; across all powders the maximum-charge window runs from 1,555 fps to 2,585 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 75–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, 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 Deep Curl 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.