Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 160gr | NorthFork Bonded Core bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, Alliant Reloder-26 and Alliant Reloder-16.
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% | 40,016 psi | 84% | 2503 fps | 96.6% |
| Accurate 4064 | <<locked>> | 82% | 41,263 psi | 86% | 2464 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 42,699 psi | 89% | 2566 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 84% | 42,714 psi | 89% | 2480 fps | 99% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 43,221 psi | 90% | 2618 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,641 psi | 89% | 2507 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,989 psi | 90% | 2520 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,264 psi | 88% | 2579 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 88% | 42,293 psi | 88% | 2605 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,624 psi | 81% | 2536 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,989 psi | 90% | 2690 fps | 98.7% |
| Bofors RP3 | <<locked>> | 84% | 42,235 psi | 88% | 2510 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 40,480 psi | 85% | 2467 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 90% | 42,714 psi | 89% | 2566 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 41,437 psi | 87% | 2516 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 74% | 1611 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,264 psi | 88% | 2464 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 42,293 psi | 88% | 2467 fps | 95.8% |
| IMR 4831 | <<locked>> | 92% | 40,915 psi | 85% | 2520 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 42,221 psi | 88% | 2467 fps | 99.9% |
| Lovex S065 | <<locked>> | 88% | 41,655 psi | 87% | 2467 fps | 97.2% |
| Lovex S070 | <<locked>> | 90% | 42,061 psi | 88% | 2493 fps | 96.2% |
| Norma 203B | <<locked>> | 82% | 42,322 psi | 88% | 2510 fps | 99.4% |
| Norma MRPᴾ | <<locked>> | 100% | 43,062 psi | 90% | 2648 fps | 96.1% |
| Norma URP | <<locked>> | 92% | 42,511 psi | 89% | 2562 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 82% | 41,814 psi | 87% | 2523 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 92% | 41,568 psi | 87% | 2552 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,042 psi | 75% | 1650 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,828 psi | 85% | 2451 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 42,134 psi | 88% | 2608 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,337 psi | 88% | 2589 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,540 psi | 89% | 2605 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 86% | 42,380 psi | 89% | 2510 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,655 psi | 87% | 2467 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 42,221 psi | 88% | 2467 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 90% | 42,061 psi | 88% | 2493 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 40,814 psi | 85% | 2510 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,511 psi | 89% | 2395 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 43,265 psi | 90% | 2513 fps | 99.7% |
| Somchem S365 | <<locked>> | 94% | 40,625 psi | 85% | 2569 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 41,220 psi | 86% | 2448 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 90% | 41,959 psi | 88% | 2513 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 82% | 42,641 psi | 89% | 2464 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 41,162 psi | 86% | 2516 fps | 98.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,119 psi | 88% | 2605 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 41,771 psi | 87% | 2493 fps | 99.7% |
| Winchester 760 | <<locked>> | 90% | 42,714 psi | 89% | 2566 fps | 96.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,316 psi | 72% | 2539 fps | 99.3% |
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 3100 | <<locked>> | 96% | 34,940 psi | 73% | 2402 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,841 psi | 81% | 2421 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 30,356 psi | 63% | 2310 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 37,869 psi | 79% | 2388 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,422 psi | 84% | 2562 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,463 psi | 78% | 2411 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,190 psi | 84% | 2467 fps | 98.7% |
| Alliant Reloder-16 | 37.9 gr | 82% | 31,140 psi | 65% | 2323 fps | 95.4% |
| Alliant Reloder-17 | 39.8 gr | 80% | 32,358 psi | 68% | 2385 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 88% | 26,803 psi | 56% | 2234 fps | 95% |
| Alliant Reloder-26 | 46.9 gr | 92% | 32,590 psi | 68% | 2448 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 37,014 psi | 77% | 2411 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 80% | 37,811 psi | 79% | 2415 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 39,958 psi | 83% | 2510 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,731 psi | 56% | 2178 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,513 psi | 55% | 1437 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,755 psi | 83% | 2418 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 39,639 psi | 83% | 2415 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 31,691 psi | 66% | 2323 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 39,711 psi | 83% | 2421 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 34,650 psi | 72% | 2320 fps | 95.1% |
| Lovex S070 | <<locked>> | 88% | 39,653 psi | 83% | 2448 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 39,566 psi | 83% | 2457 fps | 99% |
| Norma MRP | <<locked>> | 98% | 40,263 psi | 84% | 2589 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 30,792 psi | 64% | 2310 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 39,088 psi | 82% | 2470 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 36,695 psi | 77% | 2451 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,731 psi | 56% | 1470 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,247 psi | 80% | 2398 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,447 psi | 72% | 2448 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,227 psi | 67% | 2372 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 34,708 psi | 73% | 2431 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 34,882 psi | 73% | 2362 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 34,650 psi | 72% | 2320 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 39,711 psi | 83% | 2421 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 39,653 psi | 83% | 2448 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,911 psi | 75% | 2411 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,565 psi | 78% | 2313 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 35,795 psi | 75% | 2369 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 25,933 psi | 54% | 2215 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 80% | 33,997 psi | 71% | 2306 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 32,329 psi | 68% | 2313 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 39,914 psi | 83% | 2415 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 31,647 psi | 66% | 2313 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 88% | 28,543 psi | 60% | 2306 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,110 psi | 63% | 2241 fps | 97% |
| Winchester 760 | <<locked>> | 88% | 39,958 psi | 83% | 2510 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,687 psi | 56% | 2300 fps | 95.2% |
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 48 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 160gr | NorthFork Bonded Core. Alliant Reloder-26 delivers the highest muzzle velocity at 2,690 fps; across all powders the maximum-charge window runs from 1,611 fps to 2,690 fps. Accurate 3100 gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 72–90 %, 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. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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-17, Alliant Reloder-26, Alliant Reloder-16 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 160gr | NorthFork Bonded Core 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.