Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 160gr | Speer Hot-Cor bullet and 42 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and ReloadSwiss RS 62.
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 3100ᴾ | <<locked>> | 100% | 42,322 psi | 88% | 2559 fps | 97.5% |
| Accurate 4350 | <<locked>> | 90% | 42,119 psi | 88% | 2572 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 82% | 41,742 psi | 87% | 2480 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 41,727 psi | 87% | 2507 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 41,307 psi | 86% | 2579 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 86% | 41,307 psi | 86% | 2602 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,538 psi | 85% | 2592 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,192 psi | 88% | 2694 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 41,553 psi | 87% | 2513 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 42,221 psi | 88% | 2516 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 88% | 41,756 psi | 87% | 2562 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 40,814 psi | 85% | 2520 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,824 psi | 75% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 42,235 psi | 88% | 2510 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,147 psi | 86% | 2467 fps | 95.9% |
| IMR 4831 | <<locked>> | 92% | 43,163 psi | 90% | 2572 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 40,872 psi | 85% | 2467 fps | 97.3% |
| Lovex S070 | <<locked>> | 88% | 41,205 psi | 86% | 2493 fps | 96.3% |
| Norma MRP | <<locked>> | 98% | 42,395 psi | 89% | 2654 fps | 96.3% |
| Norma URP | <<locked>> | 90% | 41,930 psi | 88% | 2566 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 40,785 psi | 85% | 2552 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,274 psi | 76% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,699 psi | 89% | 2503 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 41,191 psi | 86% | 2605 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,626 psi | 87% | 2589 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,495 psi | 87% | 2605 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 84% | 41,727 psi | 87% | 2510 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 40,872 psi | 85% | 2467 fps | 97.3% |
| Shooters World SW4350 | <<locked>> | 88% | 41,205 psi | 86% | 2493 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 42,844 psi | 90% | 2562 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 41,307 psi | 86% | 2388 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,960 psi | 90% | 2464 fps | 96.5% |
| Somchem S355 | <<locked>> | 84% | 42,264 psi | 88% | 2510 fps | 99.7% |
| Somchem S365 | <<locked>> | 94% | 42,772 psi | 89% | 2621 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 42,685 psi | 89% | 2559 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 86% | 43,192 psi | 90% | 2497 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 41,075 psi | 86% | 2513 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 90% | 43,221 psi | 90% | 2569 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 98% | 41,727 psi | 87% | 2612 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 40,799 psi | 85% | 2490 fps | 99.7% |
| Winchester 760 | <<locked>> | 88% | 42,003 psi | 88% | 2569 fps | 96.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,085 psi | 75% | 2608 fps | 99.8% |
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>> | 94% | 34,650 psi | 72% | 2408 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 29,762 psi | 62% | 2303 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 39,349 psi | 82% | 2434 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,073 psi | 82% | 2454 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,371 psi | 63% | 2320 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,779 psi | 71% | 2438 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,411 psi | 55% | 2238 fps | 95.2% |
| Alliant Reloder-26 | 47.8 gr | 90% | 31,923 psi | 67% | 2451 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 38,885 psi | 81% | 2464 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 80% | 39,566 psi | 83% | 2467 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 39,160 psi | 82% | 2510 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,978 psi | 58% | 2231 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 55% | 1453 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 39,885 psi | 83% | 2464 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 38,914 psi | 81% | 2421 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 29,124 psi | 61% | 2270 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 33,982 psi | 71% | 2323 fps | 95.2% |
| Lovex S070 | <<locked>> | 86% | 38,928 psi | 81% | 2448 fps | 95.7% |
| Norma MRP | <<locked>> | 96% | 39,465 psi | 82% | 2592 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 30,298 psi | 63% | 2310 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 86% | 35,955 psi | 75% | 2451 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,035 psi | 56% | 1493 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,856 psi | 83% | 2448 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,955 psi | 75% | 2497 fps | 100% |
| ReloadSwiss RS 62 | 42.5 gr | 82% | 31,778 psi | 66% | 2375 fps | 95.7% |
| ReloadSwiss RS 70 | 44.2 gr | 84% | 33,910 psi | 71% | 2431 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 36,535 psi | 76% | 2411 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,982 psi | 71% | 2323 fps | 95.2% |
| Shooters World SW4350 | <<locked>> | 86% | 38,928 psi | 81% | 2448 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,362 psi | 78% | 2457 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,870 psi | 81% | 2349 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,666 psi | 79% | 2365 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 37,376 psi | 78% | 2415 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 27,137 psi | 57% | 2264 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 39,987 psi | 84% | 2507 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 35,462 psi | 74% | 2352 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 31,502 psi | 66% | 2306 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 31,096 psi | 65% | 2313 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 28,268 psi | 59% | 2310 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,444 psi | 66% | 2290 fps | 97.9% |
| Winchester 760 | <<locked>> | 86% | 39,392 psi | 82% | 2516 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,295 psi | 55% | 2306 fps | 95.5% |
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 42 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 160gr | Speer Hot-Cor. Alliant Reloder-26 delivers the highest muzzle velocity at 2,694 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,694 fps. Accurate 3100 gives the best case fill at 100 %, and 42 of the 42 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 160.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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, ReloadSwiss RS 70, ReloadSwiss RS 62 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 160gr | Speer Hot-Cor 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.