Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 160gr | Nosler AccuBond bullet and 49 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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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100ᴾ | <<locked>> | 100% | 40,001 psi | 84% | 2503 fps | 96.6% |
| Accurate 4064 | <<locked>> | 82% | 41,263 psi | 86% | 2464 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 42,627 psi | 89% | 2569 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 84% | 42,975 psi | 90% | 2487 fps | 99.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 43,192 psi | 90% | 2618 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,612 psi | 89% | 2507 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,946 psi | 90% | 2520 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,206 psi | 88% | 2579 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 88% | 42,235 psi | 88% | 2605 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,566 psi | 81% | 2536 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,902 psi | 90% | 2687 fps | 98.7% |
| Bofors RP3 | <<locked>> | 84% | 42,453 psi | 89% | 2516 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 84% | 43,294 psi | 90% | 2520 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 90% | 42,685 psi | 89% | 2566 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 41,408 psi | 87% | 2516 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 74% | 1611 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,511 psi | 89% | 2470 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 42,235 psi | 88% | 2467 fps | 95.8% |
| IMR 4831 | <<locked>> | 92% | 41,162 psi | 86% | 2523 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 42,163 psi | 88% | 2467 fps | 99.9% |
| Lovex S065 | <<locked>> | 88% | 41,626 psi | 87% | 2467 fps | 97.2% |
| Lovex S070 | <<locked>> | 90% | 42,032 psi | 88% | 2493 fps | 96.2% |
| Norma 203B | <<locked>> | 82% | 42,293 psi | 88% | 2510 fps | 99.4% |
| Norma MRPᴾ | <<locked>> | 100% | 42,989 psi | 90% | 2648 fps | 96.1% |
| Norma URP | <<locked>> | 92% | 42,786 psi | 89% | 2566 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 82% | 41,800 psi | 87% | 2523 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 92% | 41,814 psi | 87% | 2556 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,013 psi | 75% | 1650 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,089 psi | 86% | 2457 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 42,047 psi | 88% | 2608 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,308 psi | 88% | 2589 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,482 psi | 89% | 2605 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 86% | 42,322 psi | 88% | 2507 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,626 psi | 87% | 2467 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 42,163 psi | 88% | 2467 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 90% | 42,032 psi | 88% | 2493 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 40,799 psi | 85% | 2510 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,482 psi | 89% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 41,075 psi | 86% | 2415 fps | 95.7% |
| Somchem S355 | <<locked>> | 86% | 43,221 psi | 90% | 2513 fps | 99.7% |
| Somchem S365 | <<locked>> | 94% | 40,596 psi | 85% | 2569 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 41,162 psi | 86% | 2448 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 90% | 41,930 psi | 88% | 2513 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 82% | 42,583 psi | 89% | 2464 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 41,104 psi | 86% | 2516 fps | 98.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,061 psi | 88% | 2605 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 41,713 psi | 87% | 2490 fps | 99.7% |
| Winchester 760 | <<locked>> | 90% | 42,685 psi | 89% | 2566 fps | 96.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,505 psi | 72% | 2546 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% | 34,867 psi | 73% | 2402 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,783 psi | 81% | 2418 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 30,356 psi | 63% | 2310 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 37,826 psi | 79% | 2388 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,335 psi | 84% | 2559 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,434 psi | 78% | 2411 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,161 psi | 84% | 2467 fps | 98.7% |
| Alliant Reloder-16 | 37.9 gr | 82% | 31,111 psi | 65% | 2323 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,329 psi | 68% | 2385 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 88% | 26,774 psi | 56% | 2234 fps | 95% |
| Alliant Reloder-26 | 46.9 gr | 92% | 32,518 psi | 68% | 2448 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 37,217 psi | 78% | 2418 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 80% | 38,029 psi | 79% | 2418 fps | 97.2% |
| Hodgdon H414 | <<locked>> | 88% | 39,914 psi | 83% | 2510 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,716 psi | 56% | 2178 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,484 psi | 55% | 1437 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,711 psi | 83% | 2418 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 39,827 psi | 83% | 2421 fps | 95.1% |
| IMR 4831 | <<locked>> | 84% | 31,647 psi | 66% | 2323 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 39,682 psi | 83% | 2421 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 34,621 psi | 72% | 2320 fps | 95.1% |
| Lovex S070 | <<locked>> | 88% | 39,595 psi | 83% | 2448 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 39,523 psi | 83% | 2457 fps | 99% |
| Norma MRP | <<locked>> | 98% | 40,205 psi | 84% | 2589 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 30,995 psi | 65% | 2313 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 39,044 psi | 82% | 2470 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 36,651 psi | 77% | 2451 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,716 psi | 56% | 1470 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,450 psi | 80% | 2405 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,403 psi | 72% | 2448 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,184 psi | 67% | 2372 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 34,679 psi | 72% | 2431 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 34,867 psi | 73% | 2362 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 34,621 psi | 72% | 2320 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 39,682 psi | 83% | 2421 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 39,595 psi | 83% | 2448 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,882 psi | 75% | 2411 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,507 psi | 78% | 2310 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 38,595 psi | 81% | 2369 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 35,766 psi | 75% | 2369 fps | 98.6% |
| Somchem S365 | 37.7 gr | 80% | 25,918 psi | 54% | 2215 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 80% | 33,953 psi | 71% | 2306 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 32,314 psi | 68% | 2313 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 40,132 psi | 84% | 2421 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 31,618 psi | 66% | 2313 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 88% | 28,514 psi | 60% | 2306 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,095 psi | 63% | 2241 fps | 97% |
| Winchester 760 | <<locked>> | 88% | 40,161 psi | 84% | 2516 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,847 psi | 56% | 2306 fps | 95.4% |
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 49 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 160gr | Nosler AccuBond. Alliant Reloder-26 delivers the highest muzzle velocity at 2,687 fps; across all powders the maximum-charge window runs from 1,611 fps to 2,687 fps. Accurate 3100 gives the best case fill at 100 %, and 49 of the 49 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 1:10.5 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-26, Alliant Reloder-16, Somchem S365 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 160gr | Nosler AccuBond 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.