Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 165gr | Osprey Virtus bullet and 56 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% | 40,959 psi | 86% | 2379 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 37,492 psi | 78% | 2415 fps | 96% |
| Accurate 4064 | <<locked>> | 84% | 41,379 psi | 86% | 2425 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 42,873 psi | 90% | 2526 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 84% | 41,031 psi | 86% | 2405 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,162 psi | 86% | 2530 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 43,192 psi | 90% | 2470 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 82% | 40,785 psi | 85% | 2434 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,728 psi | 89% | 2539 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 90% | 42,757 psi | 89% | 2566 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,477 psi | 76% | 2448 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,495 psi | 85% | 2592 fps | 98.2% |
| Bofors RP3 | <<locked>> | 86% | 42,946 psi | 90% | 2480 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 84% | 40,959 psi | 86% | 2431 fps | 98% |
| Hodgdon H414 | <<locked>> | 92% | 43,221 psi | 90% | 2526 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 41,829 psi | 87% | 2477 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 41,698 psi | 87% | 2480 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,346 psi | 74% | 1565 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 43,091 psi | 90% | 2431 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,250 psi | 90% | 2408 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 43,163 psi | 90% | 2438 fps | 96.1% |
| IMR 4831 | <<locked>> | 94% | 41,452 psi | 87% | 2484 fps | 98.6% |
| IMR 4895 | <<locked>> | 82% | 41,814 psi | 87% | 2464 fps | 99.4% |
| Lovex S062 | <<locked>> | 84% | 42,844 psi | 90% | 2434 fps | 99.9% |
| Lovex S065 | <<locked>> | 90% | 42,322 psi | 88% | 2431 fps | 97.4% |
| Lovex S070 | <<locked>> | 92% | 42,569 psi | 89% | 2457 fps | 96.4% |
| Norma 203B | <<locked>> | 84% | 42,830 psi | 89% | 2470 fps | 99.5% |
| Norma URP | <<locked>> | 94% | 43,221 psi | 90% | 2526 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 84% | 42,612 psi | 89% | 2490 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 94% | 42,119 psi | 88% | 2516 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,433 psi | 74% | 1598 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,785 psi | 87% | 2425 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 42,931 psi | 90% | 2533 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 42,815 psi | 89% | 2572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 42,888 psi | 90% | 2552 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 43,105 psi | 90% | 2566 fps | 98.2% |
| Rottweil R 902 | <<locked>> | 82% | 42,105 psi | 88% | 2402 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 88% | 42,873 psi | 90% | 2470 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,322 psi | 88% | 2431 fps | 97.4% |
| Shooters World Precision | <<locked>> | 84% | 42,844 psi | 90% | 2434 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 92% | 42,569 psi | 89% | 2457 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 41,539 psi | 87% | 2477 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 43,149 psi | 90% | 2359 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 41,669 psi | 87% | 2379 fps | 95.9% |
| Somchem S355 | <<locked>> | 86% | 41,089 psi | 86% | 2428 fps | 99.5% |
| Somchem S365 | <<locked>> | 96% | 41,002 psi | 86% | 2530 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 41,539 psi | 87% | 2379 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,250 psi | 88% | 2388 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 41,843 psi | 87% | 2415 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 42,279 psi | 88% | 2474 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 84% | 43,250 psi | 90% | 2428 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 41,452 psi | 87% | 2477 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,436 psi | 82% | 2513 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 42,583 psi | 89% | 2457 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,300 psi | 67% | 2441 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 82% | 43,163 psi | 90% | 2470 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 2495 | <<locked>> | 80% | 38,261 psi | 80% | 2336 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 34,925 psi | 73% | 2362 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 36,230 psi | 76% | 2333 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 30,182 psi | 63% | 2267 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 36,056 psi | 75% | 2306 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,580 psi | 81% | 2477 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,491 psi | 74% | 2326 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,247 psi | 80% | 2385 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 31,285 psi | 65% | 2287 fps | 95.6% |
| Alliant Reloder-17 | 38 gr | 80% | 30,589 psi | 64% | 2300 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 90% | 26,832 psi | 56% | 2198 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 94% | 32,576 psi | 68% | 2408 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 34,882 psi | 73% | 2329 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 80% | 35,897 psi | 75% | 2333 fps | 96.6% |
| Hodgdon H414 | <<locked>> | 90% | 40,524 psi | 85% | 2477 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 26,760 psi | 56% | 2146 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,769 psi | 81% | 2428 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,121 psi | 55% | 1394 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,840 psi | 79% | 2336 fps | 98.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,625 psi | 85% | 2359 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 40,567 psi | 85% | 2388 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 29,660 psi | 62% | 2238 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 39,160 psi | 82% | 2415 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 37,623 psi | 79% | 2339 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 34,983 psi | 73% | 2290 fps | 95.3% |
| Lovex S070 | <<locked>> | 90% | 39,958 psi | 83% | 2408 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 37,608 psi | 79% | 2375 fps | 98.7% |
| Norma URP | <<locked>> | 84% | 31,067 psi | 65% | 2277 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 37,188 psi | 78% | 2388 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 37,188 psi | 78% | 2418 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,295 psi | 55% | 1427 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 36,564 psi | 76% | 2320 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,103 psi | 84% | 2480 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 32,648 psi | 68% | 2362 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 32,474 psi | 68% | 2339 fps | 95.7% |
| ReloadSwiss RS 70 | 42.4 gr | 88% | 35,157 psi | 73% | 2398 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 39,479 psi | 82% | 2356 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 32,750 psi | 68% | 2277 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 34,983 psi | 73% | 2290 fps | 95.3% |
| Shooters World Precision | <<locked>> | 80% | 37,623 psi | 79% | 2339 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 90% | 39,958 psi | 83% | 2408 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,997 psi | 71% | 2326 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,621 psi | 74% | 2234 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 38,972 psi | 81% | 2333 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 33,779 psi | 71% | 2283 fps | 98.2% |
| Somchem S365 | 36 gr | 80% | 24,279 psi | 51% | 2129 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 38,812 psi | 81% | 2333 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,610 psi | 83% | 2346 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,082 psi | 67% | 2228 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 30,443 psi | 64% | 2228 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 38,101 psi | 80% | 2339 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 31,763 psi | 66% | 2277 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 90% | 28,253 psi | 59% | 2264 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,601 psi | 60% | 2162 fps | 96.5% |
| Winchester StaBALL HD | <<locked>> | 94% | 26,614 psi | 56% | 2257 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,480 psi | 85% | 2421 fps | 99.5% |
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 56 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 165gr | Osprey Virtus. Alliant Reloder-26 delivers the highest muzzle velocity at 2,592 fps; across all powders the maximum-charge window runs from 1,565 fps to 2,592 fps. Accurate 3100 gives the best case fill at 100 %, and 56 of the 56 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.284" calls for a 1:8.5 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. Somchem S365, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 165gr | Osprey Virtus 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.