Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 180gr | Berger BT Target 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 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 3100 | <<locked>> | 98% | 42,119 psi | 88% | 2402 fps | 98.4% |
| Accurate 4350 | <<locked>> | 88% | 41,713 psi | 87% | 2405 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 40,843 psi | 85% | 2415 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 40,524 psi | 85% | 2428 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 42,801 psi | 89% | 2428 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 98% | 42,453 psi | 89% | 2470 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,656 psi | 89% | 2474 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,623 psi | 79% | 2398 fps | 97.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 41,524 psi | 87% | 2526 fps | 99.4% |
| Bofors RP5 | <<locked>> | 98% | 42,453 psi | 89% | 2470 fps | 96.1% |
| Bofors RP7 | <<locked>> | 84% | 41,582 psi | 87% | 2323 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 86% | 41,321 psi | 86% | 2398 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 84% | 42,032 psi | 88% | 2365 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 42,844 psi | 90% | 2395 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 40,509 psi | 85% | 2415 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,824 psi | 75% | 1519 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 41,568 psi | 87% | 2349 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,960 psi | 90% | 2349 fps | 97.4% |
| IMR 4831 | <<locked>> | 90% | 42,525 psi | 89% | 2405 fps | 99.5% |
| Lovex S065 | <<locked>> | 86% | 42,844 psi | 90% | 2352 fps | 98.6% |
| Lovex S070 | <<locked>> | 88% | 43,236 psi | 90% | 2379 fps | 97.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,550 psi | 78% | 2320 fps | 97.3% |
| Norma MRP | <<locked>> | 96% | 41,698 psi | 87% | 2490 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 41,408 psi | 87% | 2398 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 90% | 43,004 psi | 90% | 2441 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,376 psi | 76% | 1555 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 43,120 psi | 90% | 2477 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 41,408 psi | 87% | 2425 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 40,828 psi | 85% | 2441 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 82% | 41,002 psi | 86% | 2339 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 41,611 psi | 87% | 2411 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 84% | 41,582 psi | 87% | 2323 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 42,844 psi | 90% | 2352 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 88% | 43,236 psi | 90% | 2379 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 42,076 psi | 88% | 2388 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,090 psi | 88% | 2300 fps | 97.3% |
| Somchem S355 | <<locked>> | 82% | 41,655 psi | 87% | 2339 fps | 99.9% |
| Somchem S365 | <<locked>> | 92% | 42,424 psi | 89% | 2451 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 42,206 psi | 88% | 2398 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 84% | 42,511 psi | 89% | 2326 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 40,451 psi | 85% | 2346 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 98% | 41,437 psi | 87% | 2372 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 88% | 42,583 psi | 89% | 2402 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 96% | 41,727 psi | 87% | 2451 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 42,685 psi | 89% | 2372 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,321 psi | 86% | 2398 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,072 psi | 80% | 2507 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% | 32,111 psi | 67% | 2211 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 31,691 psi | 66% | 2208 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,821 psi | 66% | 2218 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,621 psi | 74% | 2333 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 40,292 psi | 84% | 2382 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 39,726 psi | 83% | 2418 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,584 psi | 51% | 2054 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 94% | 31,372 psi | 66% | 2247 fps | 95.4% |
| Alliant Reloder-26 | 43.5 gr | 86% | 29,602 psi | 62% | 2251 fps | 95.7% |
| Bofors RP5 | <<locked>> | 96% | 39,726 psi | 83% | 2418 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 36,622 psi | 77% | 2224 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 33,895 psi | 71% | 2251 fps | 95% |
| Hodgdon H4350 | <<locked>> | 82% | 39,566 psi | 83% | 2320 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,370 psi | 61% | 2129 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 84% | 37,898 psi | 79% | 2359 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 56% | 1358 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 36,912 psi | 77% | 2257 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,130 psi | 80% | 2257 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 30,850 psi | 64% | 2172 fps | 97% |
| Lovex S065 | <<locked>> | 80% | 35,578 psi | 74% | 2215 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 33,765 psi | 71% | 2195 fps | 95.1% |
| Lovex S071 | <<locked>> | 94% | 30,995 psi | 65% | 2185 fps | 95.1% |
| Norma MRP | 45.1 gr | 92% | 36,419 psi | 76% | 2382 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 31,981 psi | 67% | 2208 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 82% | 33,199 psi | 69% | 2244 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 57% | 1388 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,884 psi | 79% | 2382 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,328 psi | 65% | 2221 fps | 96.8% |
| ReloadSwiss RS 70 | 40.1 gr | 80% | 31,299 psi | 65% | 2228 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,493 psi | 80% | 2293 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 92% | 38,812 psi | 81% | 2359 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 36,622 psi | 77% | 2224 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,578 psi | 74% | 2215 fps | 97% |
| Shooters World SW4350 | <<locked>> | 80% | 33,765 psi | 71% | 2195 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,305 psi | 82% | 2339 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 34,722 psi | 73% | 2162 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 39,189 psi | 82% | 2297 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 28,689 psi | 60% | 2172 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 37,101 psi | 78% | 2303 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 37,275 psi | 78% | 2238 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 33,301 psi | 70% | 2208 fps | 97.5% |
| Vihtavuori N165 | <<locked>> | 96% | 38,725 psi | 81% | 2320 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 32,750 psi | 68% | 2208 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 26,368 psi | 55% | 2119 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,909 psi | 69% | 2185 fps | 99.1% |
| Winchester 760 | <<locked>> | 80% | 33,895 psi | 71% | 2251 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 86% | 24,569 psi | 51% | 2126 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 | 180gr | Berger BT Target. Alliant Reloder-26 delivers the highest muzzle velocity at 2,526 fps; across all powders the maximum-charge window runs from 1,519 fps to 2,526 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 180.0 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-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, ReloadSwiss RS 70 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 180gr | Berger BT Target 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.