Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 175gr | Swift A-Frame bullet and 46 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% | 41,466 psi | 87% | 2428 fps | 98% |
| Accurate 4350 | <<locked>> | 88% | 40,930 psi | 86% | 2428 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 82% | 43,105 psi | 90% | 2382 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 43,047 psi | 90% | 2405 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,989 psi | 90% | 2490 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 86% | 42,931 psi | 90% | 2510 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,076 psi | 88% | 2500 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,115 psi | 78% | 2418 fps | 97.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 40,799 psi | 85% | 2546 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 43,105 psi | 90% | 2415 fps | 100% |
| Bofors RP7 | <<locked>> | 84% | 41,046 psi | 86% | 2346 fps | 96.2% |
| Hodgdon H414 | <<locked>> | 86% | 40,625 psi | 85% | 2425 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 42,380 psi | 89% | 2425 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 43,033 psi | 90% | 2497 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 75% | 1545 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 41,205 psi | 86% | 2375 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,395 psi | 89% | 2372 fps | 97% |
| IMR 4831 | <<locked>> | 90% | 42,047 psi | 88% | 2431 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 42,279 psi | 88% | 2375 fps | 98.3% |
| Lovex S070 | <<locked>> | 88% | 42,873 psi | 90% | 2408 fps | 97.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,753 psi | 77% | 2339 fps | 96.8% |
| Norma MRP | <<locked>> | 96% | 41,075 psi | 86% | 2510 fps | 96.9% |
| Norma URP | <<locked>> | 88% | 41,002 psi | 86% | 2425 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 90% | 42,496 psi | 89% | 2467 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,376 psi | 76% | 1581 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 42,685 psi | 89% | 2507 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 40,553 psi | 85% | 2448 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 43,120 psi | 90% | 2520 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 43,279 psi | 90% | 2415 fps | 100% |
| Rottweil R 907 | <<locked>> | 84% | 41,046 psi | 86% | 2346 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 42,279 psi | 88% | 2375 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 88% | 42,873 psi | 90% | 2408 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 41,423 psi | 87% | 2415 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 42,554 psi | 89% | 2287 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,756 psi | 87% | 2329 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 43,294 psi | 90% | 2480 fps | 96% |
| Somchem S355 | <<locked>> | 82% | 41,104 psi | 86% | 2365 fps | 99.9% |
| Somchem S365 | <<locked>> | 92% | 41,858 psi | 87% | 2477 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 41,655 psi | 87% | 2421 fps | 96.5% |
| Vihtavuori N150 | <<locked>> | 84% | 41,872 psi | 87% | 2352 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 42,627 psi | 89% | 2421 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 88% | 41,872 psi | 87% | 2425 fps | 99% |
| Vihtavuori N555 | <<locked>> | 96% | 40,799 psi | 85% | 2470 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 42,235 psi | 88% | 2398 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,886 psi | 85% | 2428 fps | 97% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,724 psi | 79% | 2533 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% | 31,705 psi | 66% | 2234 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 31,169 psi | 65% | 2228 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 80% | 40,625 psi | 85% | 2339 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,509 psi | 85% | 2362 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,401 psi | 66% | 2241 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,070 psi | 73% | 2356 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,236 psi | 51% | 2070 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 96% | 32,851 psi | 69% | 2316 fps | 95.7% |
| Alliant Reloder-26 | 43.9 gr | 86% | 29,037 psi | 61% | 2267 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 40,219 psi | 84% | 2365 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 38,406 psi | 80% | 2297 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 82% | 35,737 psi | 75% | 2323 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,979 psi | 61% | 2152 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 84% | 37,478 psi | 78% | 2385 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,745 psi | 56% | 1378 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 38,595 psi | 81% | 2323 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,710 psi | 79% | 2283 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 30,429 psi | 64% | 2195 fps | 96.6% |
| Lovex S065 | <<locked>> | 80% | 35,157 psi | 73% | 2238 fps | 96.5% |
| Lovex S070 | <<locked>> | 82% | 35,389 psi | 74% | 2260 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 32,358 psi | 68% | 2247 fps | 95.3% |
| Norma MRP | 45.6 gr | 92% | 35,969 psi | 75% | 2402 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 31,517 psi | 66% | 2231 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 82% | 32,706 psi | 68% | 2264 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 57% | 1414 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,318 psi | 78% | 2408 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,806 psi | 64% | 2244 fps | 96.2% |
| ReloadSwiss RS 70 | 40.5 gr | 80% | 30,850 psi | 64% | 2244 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 37,971 psi | 79% | 2320 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 38,406 psi | 80% | 2297 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,157 psi | 73% | 2238 fps | 96.5% |
| Shooters World SW4350 | <<locked>> | 82% | 35,389 psi | 74% | 2260 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,986 psi | 81% | 2369 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,987 psi | 84% | 2247 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 36,709 psi | 77% | 2234 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 40,422 psi | 84% | 2428 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 38,711 psi | 81% | 2323 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 28,268 psi | 59% | 2192 fps | 98.7% |
| Somchem S385 | <<locked>> | 92% | 38,914 psi | 81% | 2372 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 36,767 psi | 77% | 2260 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 32,822 psi | 69% | 2228 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 80% | 32,256 psi | 67% | 2231 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 82% | 25,933 psi | 54% | 2139 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,416 psi | 68% | 2208 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 35,737 psi | 75% | 2323 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 86% | 24,149 psi | 50% | 2136 fps | 95.3% |
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 46 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 175gr | Swift A-Frame. Alliant Reloder-26 delivers the highest muzzle velocity at 2,546 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,546 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 46 of the 46 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, ReloadSwiss RS 70 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 175gr | Swift A-Frame 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.