Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 175gr | Barnes Solid RN 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, Norma MRP 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.
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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 41,017 psi | 86% | 2415 fps | 97.9% |
| Accurate 4350 | <<locked>> | 88% | 40,683 psi | 85% | 2421 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 82% | 42,873 psi | 90% | 2375 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 42,801 psi | 89% | 2398 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,525 psi | 89% | 2477 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 86% | 42,467 psi | 89% | 2497 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,655 psi | 87% | 2490 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,796 psi | 77% | 2408 fps | 97.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 40,422 psi | 84% | 2536 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 42,511 psi | 89% | 2405 fps | 100% |
| Bofors RP7 | <<locked>> | 84% | 40,553 psi | 85% | 2333 fps | 96% |
| Hodgdon H414 | <<locked>> | 88% | 42,960 psi | 90% | 2464 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 41,901 psi | 88% | 2415 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 42,641 psi | 89% | 2484 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,926 psi | 75% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 40,756 psi | 85% | 2362 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,221 psi | 88% | 2365 fps | 96.9% |
| IMR 4831 | <<locked>> | 90% | 41,510 psi | 87% | 2421 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 41,771 psi | 87% | 2362 fps | 98.2% |
| Lovex S070 | <<locked>> | 88% | 42,366 psi | 89% | 2395 fps | 97.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,274 psi | 76% | 2326 fps | 96.6% |
| Norma MRP | <<locked>> | 96% | 40,683 psi | 85% | 2500 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 43,062 psi | 90% | 2461 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 90% | 42,090 psi | 88% | 2457 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,463 psi | 76% | 1578 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 42,221 psi | 88% | 2493 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 42,960 psi | 90% | 2487 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 42,699 psi | 89% | 2507 fps | 99% |
| Rottweil R 903 | <<locked>> | 84% | 42,743 psi | 89% | 2402 fps | 100% |
| Rottweil R 905 | <<locked>> | 96% | 43,236 psi | 90% | 2474 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 84% | 40,553 psi | 85% | 2333 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 86% | 41,771 psi | 87% | 2362 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 88% | 42,366 psi | 89% | 2395 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 41,176 psi | 86% | 2408 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 42,264 psi | 88% | 2280 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,292 psi | 86% | 2316 fps | 96.8% |
| Somchem S355 | <<locked>> | 82% | 40,872 psi | 85% | 2359 fps | 99.8% |
| Somchem S365 | <<locked>> | 92% | 41,365 psi | 86% | 2467 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 41,205 psi | 86% | 2411 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 84% | 41,394 psi | 86% | 2339 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 42,395 psi | 89% | 2411 fps | 99.2% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 43,047 psi | 90% | 2428 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 88% | 41,684 psi | 87% | 2418 fps | 99% |
| Vihtavuori N555 | <<locked>> | 98% | 43,236 psi | 90% | 2510 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 41,829 psi | 87% | 2388 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,236 psi | 90% | 2467 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,130 psi | 78% | 2516 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>> | 92% | 33,330 psi | 70% | 2267 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 30,893 psi | 65% | 2221 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 80% | 40,350 psi | 84% | 2333 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,248 psi | 84% | 2352 fps | 99.9% |
| Alliant Reloder-16 | 36.7 gr | 80% | 31,198 psi | 65% | 2231 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,621 psi | 72% | 2343 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 25,512 psi | 53% | 2110 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 96% | 32,518 psi | 68% | 2303 fps | 95.4% |
| Alliant Reloder-26 | 44.6 gr | 88% | 30,850 psi | 64% | 2313 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 39,958 psi | 83% | 2359 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 38,189 psi | 80% | 2287 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 82% | 35,273 psi | 74% | 2310 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,747 psi | 60% | 2142 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 84% | 37,086 psi | 77% | 2372 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,745 psi | 56% | 1375 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 38,406 psi | 80% | 2316 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,231 psi | 78% | 2267 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 29,936 psi | 63% | 2182 fps | 96.3% |
| Lovex S065 | <<locked>> | 80% | 34,925 psi | 73% | 2231 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 35,172 psi | 73% | 2254 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 32,155 psi | 67% | 2241 fps | 95.2% |
| Norma MRP | 46.2 gr | 94% | 38,072 psi | 80% | 2444 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 31,285 psi | 65% | 2221 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 82% | 32,518 psi | 68% | 2257 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,021 psi | 56% | 1407 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,840 psi | 77% | 2395 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,589 psi | 64% | 2234 fps | 96.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 30,487 psi | 64% | 2234 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 37,710 psi | 79% | 2313 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 94% | 40,350 psi | 84% | 2421 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 82% | 38,189 psi | 80% | 2287 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,925 psi | 73% | 2231 fps | 96.4% |
| Shooters World SW4350 | <<locked>> | 82% | 35,172 psi | 73% | 2254 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,464 psi | 80% | 2356 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,726 psi | 83% | 2241 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 36,216 psi | 76% | 2221 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 38,450 psi | 80% | 2316 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 28,021 psi | 59% | 2182 fps | 98.6% |
| Somchem S385 | <<locked>> | 92% | 38,508 psi | 80% | 2359 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 36,535 psi | 76% | 2254 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 32,576 psi | 68% | 2221 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 98% | 40,480 psi | 85% | 2382 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 32,024 psi | 67% | 2224 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 82% | 25,744 psi | 54% | 2129 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,256 psi | 67% | 2201 fps | 98.7% |
| Winchester 760 | <<locked>> | 82% | 35,520 psi | 74% | 2316 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 88% | 25,469 psi | 53% | 2182 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 | Barnes Solid RN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,536 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,536 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 1:10.5 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, Norma MRP, Alliant Reloder-16 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 175gr | Barnes Solid RN 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.