Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 160gr | Barnes XLC S bullet and 38 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-16 and Somchem S365.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 41,481 psi | 87% | 2507 fps | 96.9% |
| Accurate 4350 | <<locked>> | 88% | 41,408 psi | 87% | 2520 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 82% | 43,105 psi | 90% | 2467 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 43,265 psi | 90% | 2497 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,540 psi | 89% | 2566 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 86% | 42,467 psi | 89% | 2589 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,756 psi | 87% | 2579 fps | 99.7% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,246 psi | 78% | 2487 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 40,886 psi | 85% | 2625 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 88% | 43,250 psi | 90% | 2552 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 42,250 psi | 88% | 2510 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,216 psi | 76% | 1614 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,409 psi | 89% | 2451 fps | 95.8% |
| IMR 4831 | <<locked>> | 90% | 42,148 psi | 88% | 2516 fps | 98.7% |
| Lovex S065 | <<locked>> | 86% | 42,685 psi | 89% | 2464 fps | 97.4% |
| Lovex S070 | <<locked>> | 88% | 42,960 psi | 90% | 2487 fps | 96.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,376 psi | 78% | 2428 fps | 95.7% |
| Norma URP | <<locked>> | 88% | 40,669 psi | 85% | 2503 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 42,192 psi | 88% | 2543 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,796 psi | 77% | 1654 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 42,308 psi | 88% | 2589 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 43,265 psi | 90% | 2582 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 42,714 psi | 89% | 2589 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 82% | 41,060 psi | 86% | 2457 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 42,685 psi | 89% | 2464 fps | 97.4% |
| Shooters World SW4350 | <<locked>> | 88% | 42,960 psi | 90% | 2487 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 41,394 psi | 86% | 2500 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 42,641 psi | 89% | 2375 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,887 psi | 88% | 2405 fps | 95.8% |
| Somchem S355 | <<locked>> | 82% | 41,568 psi | 87% | 2457 fps | 99.5% |
| Somchem S365 | <<locked>> | 92% | 41,524 psi | 87% | 2562 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 42,148 psi | 88% | 2441 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 42,482 psi | 89% | 2503 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 88% | 41,959 psi | 88% | 2510 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 96% | 40,857 psi | 85% | 2559 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 42,148 psi | 88% | 2480 fps | 99.7% |
| Winchester 760 | <<locked>> | 88% | 43,250 psi | 90% | 2552 fps | 96.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,782 psi | 79% | 2605 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% | 36,651 psi | 77% | 2411 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 32,155 psi | 67% | 2323 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 40,741 psi | 85% | 2425 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,857 psi | 85% | 2451 fps | 99.6% |
| Alliant Reloder-16 | 36.9 gr | 80% | 31,995 psi | 67% | 2320 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,491 psi | 74% | 2441 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,369 psi | 59% | 2254 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,273 psi | 74% | 2438 fps | 95% |
| Alliant Reloder-26 | 45.8 gr | 90% | 33,750 psi | 71% | 2457 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 86% | 40,611 psi | 85% | 2503 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,805 psi | 62% | 2238 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,151 psi | 57% | 1440 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,161 psi | 84% | 2408 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 31,154 psi | 65% | 2283 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 35,940 psi | 75% | 2323 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 38,421 psi | 80% | 2398 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 35,259 psi | 74% | 2382 fps | 95% |
| Norma URP | <<locked>> | 80% | 32,140 psi | 67% | 2316 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 86% | 37,536 psi | 78% | 2448 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,499 psi | 57% | 1473 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,565 psi | 78% | 2493 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,604 psi | 66% | 2329 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 35,534 psi | 74% | 2431 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 38,740 psi | 81% | 2411 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,940 psi | 75% | 2323 fps | 95.5% |
| Shooters World SW4350 | <<locked>> | 84% | 38,421 psi | 80% | 2398 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,841 psi | 81% | 2451 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,219 psi | 84% | 2336 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,494 psi | 83% | 2362 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 39,305 psi | 82% | 2415 fps | 99.2% |
| Somchem S365 | 37.7 gr | 80% | 29,167 psi | 61% | 2280 fps | 98% |
| Vihtavuori N150 | <<locked>> | 80% | 37,304 psi | 78% | 2349 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 33,344 psi | 70% | 2313 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 32,880 psi | 69% | 2316 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 84% | 28,674 psi | 60% | 2277 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,996 psi | 69% | 2290 fps | 98% |
| Winchester 760 | <<locked>> | 86% | 40,611 psi | 85% | 2503 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,731 psi | 56% | 2270 fps | 95.1% |
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 38 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 160gr | Barnes XLC S. Alliant Reloder-26 delivers the highest muzzle velocity at 2,625 fps; across all powders the maximum-charge window runs from 1,614 fps to 2,625 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 38 of the 38 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 76–90 %, leaving at least 10 % headroom. The 160.0 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, Alliant Reloder-16, Somchem S365 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 160gr | Barnes XLC S 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.