Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 177gr | Brenneke TIG bullet and 49 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 Winchester StaBALL HD.
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>> | 96% | 41,104 psi | 86% | 2421 fps | 98.3% |
| Accurate 4350 | <<locked>> | 86% | 40,654 psi | 85% | 2421 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 42,177 psi | 88% | 2477 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 84% | 42,119 psi | 88% | 2497 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 41,829 psi | 87% | 2451 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 41,582 psi | 87% | 2493 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 98% | 41,887 psi | 88% | 2497 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,957 psi | 81% | 2467 fps | 98.5% |
| Alliant Reloder-26 | <<locked>> | 94% | 40,524 psi | 85% | 2546 fps | 99.4% |
| Bofors RP5 | <<locked>> | 96% | 41,582 psi | 87% | 2493 fps | 96% |
| Bofors RP7 | <<locked>> | 84% | 42,714 psi | 89% | 2382 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 86% | 42,917 psi | 90% | 2467 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 82% | 40,973 psi | 86% | 2385 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 41,916 psi | 88% | 2418 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 42,105 psi | 88% | 2484 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,230 psi | 76% | 1558 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 43,062 psi | 90% | 2411 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,640 psi | 87% | 2362 fps | 97.3% |
| IMR 4831 | <<locked>> | 88% | 41,611 psi | 87% | 2425 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 41,582 psi | 87% | 2369 fps | 98.5% |
| Lovex S070 | <<locked>> | 86% | 42,105 psi | 88% | 2398 fps | 97.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,204 psi | 82% | 2388 fps | 97.9% |
| Norma 204 | <<locked>> | 88% | 42,830 psi | 89% | 2448 fps | 95.9% |
| Norma MRP | <<locked>> | 94% | 40,770 psi | 85% | 2510 fps | 97.3% |
| Norma URP | <<locked>> | 88% | 43,149 psi | 90% | 2464 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 88% | 41,901 psi | 88% | 2461 fps | 98.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 41,162 psi | 86% | 2464 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,767 psi | 77% | 1594 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 41,959 psi | 88% | 2493 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 43,221 psi | 90% | 2493 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 42,235 psi | 88% | 2507 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 82% | 42,670 psi | 89% | 2405 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 43,207 psi | 90% | 2480 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 84% | 42,714 psi | 89% | 2382 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,582 psi | 87% | 2369 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 86% | 42,105 psi | 88% | 2398 fps | 97.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,872 psi | 85% | 2316 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 42,801 psi | 89% | 2477 fps | 96.4% |
| Somchem S355 | <<locked>> | 82% | 43,062 psi | 90% | 2402 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 41,466 psi | 87% | 2470 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 41,307 psi | 86% | 2418 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 82% | 41,249 psi | 86% | 2343 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 42,177 psi | 88% | 2415 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 98% | 43,004 psi | 90% | 2438 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 86% | 41,394 psi | 86% | 2418 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 94% | 40,741 psi | 85% | 2470 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 41,423 psi | 87% | 2388 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 43,178 psi | 90% | 2470 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,871 psi | 83% | 2585 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>> | 88% | 31,517 psi | 66% | 2228 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 33,040 psi | 69% | 2270 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,982 psi | 69% | 2283 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,970 psi | 77% | 2398 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 39,247 psi | 82% | 2398 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 39,015 psi | 82% | 2441 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 24,062 psi | 50% | 2070 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 92% | 30,574 psi | 64% | 2264 fps | 95.2% |
| Alliant Reloder-26 | 44.6 gr | 84% | 28,761 psi | 60% | 2264 fps | 95.5% |
| Bofors RP5 | <<locked>> | 94% | 39,015 psi | 82% | 2441 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 37,826 psi | 79% | 2290 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 35,273 psi | 74% | 2316 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 80% | 38,435 psi | 80% | 2336 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,356 psi | 63% | 2188 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 82% | 36,637 psi | 77% | 2372 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 56% | 1388 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 35,824 psi | 75% | 2270 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,334 psi | 82% | 2320 fps | 96.7% |
| IMR 4831 | <<locked>> | 80% | 32,140 psi | 67% | 2238 fps | 97.6% |
| Lovex S065 | <<locked>> | 80% | 36,840 psi | 77% | 2277 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 34,969 psi | 73% | 2254 fps | 95.7% |
| Lovex S071 | <<locked>> | 92% | 30,487 psi | 64% | 2205 fps | 95% |
| Norma 204 | <<locked>> | 86% | 40,147 psi | 84% | 2398 fps | 95.1% |
| Norma MRP | 46.4 gr | 90% | 35,621 psi | 74% | 2402 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 33,257 psi | 69% | 2270 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 80% | 32,256 psi | 67% | 2257 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 38,174 psi | 80% | 2408 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,456 psi | 57% | 1424 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,320 psi | 82% | 2448 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,692 psi | 68% | 2287 fps | 97.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 32,358 psi | 68% | 2290 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 80% | 39,958 psi | 83% | 2356 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 92% | 40,466 psi | 85% | 2431 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 37,826 psi | 79% | 2290 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,840 psi | 77% | 2277 fps | 97.4% |
| Shooters World SW4350 | <<locked>> | 80% | 34,969 psi | 73% | 2254 fps | 95.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,897 psi | 75% | 2221 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 40,089 psi | 84% | 2425 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 40,625 psi | 85% | 2359 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 29,820 psi | 62% | 2234 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 36,260 psi | 76% | 2320 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 38,595 psi | 81% | 2297 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 34,548 psi | 72% | 2267 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 37,768 psi | 79% | 2339 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 34,142 psi | 71% | 2274 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 80% | 25,904 psi | 54% | 2136 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,910 psi | 71% | 2244 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 35,273 psi | 74% | 2316 fps | 95.7% |
| Winchester StaBALL HD | 42.9 gr | 84% | 24,004 psi | 50% | 2142 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 49 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 177gr | Brenneke TIG. Winchester StaBALL HD delivers the highest muzzle velocity at 2,585 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,585 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 76–90 %, leaving at least 10 % headroom. The 177.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon TrailBoss, Lovex S071 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, Winchester StaBALL HD rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 177gr | Brenneke TIG 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.