Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 155gr | Frontier PH HPFB bullet and 50 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% | 42,105 psi | 88% | 2477 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 42,322 psi | 88% | 2520 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 40,741 psi | 85% | 2566 fps | 98% |
| ADI AR 2208 | <<locked>> | 84% | 41,452 psi | 87% | 2490 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,582 psi | 87% | 2618 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 40,944 psi | 86% | 2510 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 82% | 41,321 psi | 86% | 2523 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 94% | 43,207 psi | 90% | 2628 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 90% | 43,178 psi | 90% | 2657 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,883 psi | 77% | 2530 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,756 psi | 85% | 2671 fps | 97.7% |
| Bofors RP3 | <<locked>> | 84% | 40,727 psi | 85% | 2520 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 84% | 41,626 psi | 87% | 2523 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 42,322 psi | 88% | 2566 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 41,901 psi | 88% | 2569 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,375 psi | 74% | 1627 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 40,915 psi | 85% | 2474 fps | 98.6% |
| IMR 4831 | <<locked>> | 94% | 41,684 psi | 87% | 2566 fps | 98.3% |
| IMR 4895 | <<locked>> | 82% | 42,293 psi | 88% | 2552 fps | 99.2% |
| Lovex S062 | <<locked>> | 82% | 40,814 psi | 85% | 2477 fps | 99.6% |
| Lovex S065 | <<locked>> | 90% | 42,583 psi | 89% | 2513 fps | 97% |
| Lovex S070 | <<locked>> | 92% | 42,989 psi | 90% | 2543 fps | 95.9% |
| Norma 203B | <<locked>> | 84% | 43,192 psi | 90% | 2559 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 40,770 psi | 85% | 2562 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 84% | 42,960 psi | 90% | 2579 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 94% | 42,772 psi | 89% | 2605 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,795 psi | 75% | 1667 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,032 psi | 88% | 2503 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 43,178 psi | 90% | 2618 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 43,062 psi | 90% | 2657 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 43,120 psi | 90% | 2638 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,741 psi | 85% | 2598 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 82% | 42,569 psi | 89% | 2487 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 86% | 40,596 psi | 85% | 2510 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,583 psi | 89% | 2513 fps | 97% |
| Shooters World Precision | <<locked>> | 82% | 40,814 psi | 85% | 2477 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 92% | 42,989 psi | 90% | 2543 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 41,916 psi | 88% | 2566 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 40,930 psi | 86% | 2405 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 41,539 psi | 87% | 2516 fps | 99.3% |
| Somchem S365 | <<locked>> | 96% | 41,423 psi | 87% | 2618 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 41,989 psi | 88% | 2467 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,772 psi | 89% | 2480 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,395 psi | 89% | 2503 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 92% | 42,830 psi | 89% | 2562 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 82% | 41,031 psi | 86% | 2470 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 41,974 psi | 88% | 2566 fps | 97.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,827 psi | 83% | 2598 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 43,091 psi | 90% | 2546 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,025 psi | 69% | 2526 fps | 98.3% |
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% | 39,233 psi | 82% | 2428 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,072 psi | 77% | 2425 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,185 psi | 69% | 2408 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 36,651 psi | 77% | 2392 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,841 psi | 81% | 2559 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,143 psi | 76% | 2415 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,827 psi | 81% | 2474 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 84% | 31,792 psi | 66% | 2369 fps | 95% |
| Alliant Reloder-17 | 39.3 gr | 80% | 31,082 psi | 65% | 2382 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 92% | 28,935 psi | 60% | 2326 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 96% | 35,534 psi | 74% | 2552 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 35,636 psi | 74% | 2418 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 80% | 36,535 psi | 76% | 2418 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 27,238 psi | 57% | 2221 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,102 psi | 82% | 2513 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,223 psi | 55% | 1450 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,479 psi | 80% | 2425 fps | 98.1% |
| IMR 4831 | <<locked>> | 86% | 32,184 psi | 67% | 2369 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 39,740 psi | 83% | 2503 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 38,159 psi | 80% | 2425 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 37,768 psi | 79% | 2421 fps | 95.7% |
| Lovex S070 | <<locked>> | 90% | 40,480 psi | 85% | 2493 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 38,232 psi | 80% | 2464 fps | 98.5% |
| Norma URP | <<locked>> | 86% | 33,576 psi | 70% | 2408 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 37,507 psi | 78% | 2470 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 37,449 psi | 78% | 2497 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,687 psi | 56% | 1490 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 39,334 psi | 82% | 2451 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,480 psi | 85% | 2569 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,069 psi | 69% | 2444 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 32,967 psi | 69% | 2421 fps | 95.2% |
| ReloadSwiss RS 70 | 43.9 gr | 88% | 35,708 psi | 75% | 2484 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 40,045 psi | 84% | 2441 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 33,576 psi | 70% | 2365 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,768 psi | 79% | 2421 fps | 95.7% |
| Shooters World Precision | <<locked>> | 80% | 38,159 psi | 80% | 2425 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 40,480 psi | 85% | 2493 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,447 psi | 72% | 2411 fps | 97.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,056 psi | 75% | 2316 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 34,272 psi | 72% | 2369 fps | 97.9% |
| Somchem S365 | 37.3 gr | 80% | 24,976 psi | 52% | 2211 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 39,378 psi | 82% | 2425 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,176 psi | 84% | 2434 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,750 psi | 68% | 2313 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 84% | 32,938 psi | 69% | 2359 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 38,609 psi | 81% | 2428 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 32,416 psi | 68% | 2362 fps | 95% |
| Vihtavuori N555 | <<locked>> | 92% | 30,792 psi | 64% | 2395 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,008 psi | 61% | 2238 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,008 psi | 61% | 2398 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 50 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 155gr | Frontier PH HPFB. Alliant Reloder-26 delivers the highest muzzle velocity at 2,671 fps; across all powders the maximum-charge window runs from 1,627 fps to 2,671 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 50 of the 50 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 69–90 %, 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 | Frontier PH HPFB 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.