Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 155gr | CutEdge MTH bullet and 52 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, ReloadSwiss RS 70 and Alliant Reloder-17.
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 2495 | <<locked>> | 82% | 41,002 psi | 86% | 2474 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 41,278 psi | 86% | 2516 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 42,902 psi | 90% | 2621 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 84% | 40,988 psi | 86% | 2497 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,321 psi | 86% | 2625 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 42,946 psi | 90% | 2562 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 82% | 40,712 psi | 85% | 2526 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,917 psi | 90% | 2638 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 42,801 psi | 89% | 2661 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,303 psi | 76% | 2533 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,292 psi | 84% | 2677 fps | 97.7% |
| Bofors RP3 | <<locked>> | 86% | 42,873 psi | 90% | 2572 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 84% | 40,901 psi | 85% | 2523 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 92% | 43,207 psi | 90% | 2621 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 41,930 psi | 88% | 2572 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 41,669 psi | 87% | 2575 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,041 psi | 73% | 1634 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 43,062 psi | 90% | 2526 fps | 99% |
| IMR 4831 | <<locked>> | 94% | 41,220 psi | 86% | 2572 fps | 98.3% |
| IMR 4895 | <<locked>> | 82% | 41,742 psi | 87% | 2556 fps | 99.2% |
| Lovex S062 | <<locked>> | 84% | 42,772 psi | 89% | 2526 fps | 99.8% |
| Lovex S065 | <<locked>> | 90% | 42,134 psi | 88% | 2523 fps | 97% |
| Lovex S070 | <<locked>> | 92% | 42,496 psi | 89% | 2549 fps | 96% |
| Norma 203B | <<locked>> | 84% | 42,917 psi | 90% | 2569 fps | 99.3% |
| Norma URP | <<locked>> | 94% | 42,989 psi | 90% | 2618 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 84% | 42,656 psi | 89% | 2585 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 94% | 42,293 psi | 88% | 2612 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,418 psi | 74% | 1673 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,669 psi | 87% | 2510 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 42,946 psi | 90% | 2628 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 42,670 psi | 89% | 2667 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 42,888 psi | 90% | 2648 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 43,062 psi | 90% | 2657 fps | 97.9% |
| Rottweil R 902 | <<locked>> | 82% | 41,901 psi | 88% | 2490 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 88% | 42,728 psi | 89% | 2566 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,134 psi | 88% | 2523 fps | 97% |
| Shooters World Precision | <<locked>> | 84% | 42,772 psi | 89% | 2526 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 92% | 42,496 psi | 89% | 2549 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 41,611 psi | 87% | 2575 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 43,149 psi | 90% | 2454 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 40,843 psi | 85% | 2516 fps | 99.3% |
| Somchem S365 | <<locked>> | 96% | 40,930 psi | 86% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 41,452 psi | 87% | 2474 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,264 psi | 88% | 2484 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 41,742 psi | 87% | 2503 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 92% | 42,453 psi | 89% | 2569 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 84% | 43,236 psi | 90% | 2523 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 41,510 psi | 87% | 2569 fps | 97.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,204 psi | 82% | 2602 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 42,598 psi | 89% | 2549 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,300 psi | 67% | 2523 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 82% | 43,091 psi | 90% | 2562 fps | 99.6% |
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 2495 | <<locked>> | 80% | 38,159 psi | 80% | 2428 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,114 psi | 75% | 2421 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 32,343 psi | 68% | 2405 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 35,998 psi | 75% | 2395 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,348 psi | 80% | 2562 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,360 psi | 74% | 2411 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,276 psi | 80% | 2477 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 84% | 31,256 psi | 65% | 2369 fps | 95% |
| Alliant Reloder-17 | 39.9 gr | 80% | 30,458 psi | 64% | 2382 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 92% | 28,355 psi | 59% | 2323 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 35,070 psi | 73% | 2556 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 34,867 psi | 73% | 2418 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 80% | 35,853 psi | 75% | 2421 fps | 96.2% |
| Hodgdon H414 | <<locked>> | 90% | 40,350 psi | 84% | 2566 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,543 psi | 60% | 2274 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,841 psi | 81% | 2523 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 54% | 1457 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,753 psi | 79% | 2425 fps | 98% |
| IMR 4831 | <<locked>> | 86% | 31,720 psi | 66% | 2372 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 39,189 psi | 82% | 2507 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 37,536 psi | 78% | 2428 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 37,072 psi | 77% | 2421 fps | 95.6% |
| Lovex S070 | <<locked>> | 90% | 40,016 psi | 84% | 2500 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 37,652 psi | 79% | 2467 fps | 98.4% |
| Norma URP | <<locked>> | 86% | 33,199 psi | 69% | 2415 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 36,912 psi | 77% | 2474 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 36,985 psi | 77% | 2500 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,440 psi | 55% | 1496 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 38,972 psi | 81% | 2457 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,958 psi | 83% | 2572 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 32,474 psi | 68% | 2444 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 32,445 psi | 68% | 2425 fps | 95.2% |
| ReloadSwiss RS 70 | 44.6 gr | 88% | 35,201 psi | 74% | 2487 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 39,407 psi | 82% | 2444 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 32,605 psi | 68% | 2359 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,072 psi | 77% | 2421 fps | 95.6% |
| Shooters World Precision | <<locked>> | 80% | 37,536 psi | 78% | 2428 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 40,016 psi | 84% | 2500 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,881 psi | 71% | 2411 fps | 97.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,665 psi | 75% | 2323 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 33,649 psi | 70% | 2369 fps | 97.9% |
| Somchem S365 | 37.9 gr | 80% | 24,308 psi | 51% | 2205 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 38,827 psi | 81% | 2428 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,436 psi | 82% | 2434 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,937 psi | 67% | 2310 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 84% | 32,576 psi | 68% | 2365 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 38,014 psi | 79% | 2431 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 34,011 psi | 71% | 2415 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 92% | 30,168 psi | 63% | 2395 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,587 psi | 60% | 2241 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 28,485 psi | 60% | 2402 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,248 psi | 84% | 2510 fps | 99.3% |
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 52 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 155gr | CutEdge MTH. Alliant Reloder-26 delivers the highest muzzle velocity at 2,677 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,677 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 52 of the 52 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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. Somchem S365, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 155gr | CutEdge MTH 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.