Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 166gr | Peregrine VRG-2 bullet and 47 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% | 41,887 psi | 88% | 2513 fps | 97.8% |
| Accurate 4064 | <<locked>> | 82% | 42,656 psi | 89% | 2457 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 41,524 psi | 87% | 2520 fps | 99% |
| ADI AR 2208 | <<locked>> | 82% | 41,495 psi | 87% | 2434 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 41,408 psi | 87% | 2461 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 41,191 psi | 86% | 2536 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 86% | 40,930 psi | 86% | 2556 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,248 psi | 84% | 2546 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 35,447 psi | 74% | 2454 fps | 96.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 41,974 psi | 88% | 2651 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 41,118 psi | 86% | 2467 fps | 99.9% |
| Bofors RP7 | <<locked>> | 86% | 41,858 psi | 87% | 2441 fps | 96% |
| Hodgdon H380 | <<locked>> | 82% | 41,887 psi | 88% | 2470 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 88% | 41,655 psi | 87% | 2523 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 43,279 psi | 90% | 2523 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 41,046 psi | 86% | 2533 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,607 psi | 74% | 1598 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 42,148 psi | 88% | 2470 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,973 psi | 86% | 2425 fps | 96.2% |
| IMR 4831 | <<locked>> | 92% | 42,714 psi | 89% | 2526 fps | 99.2% |
| Lovex S065 | <<locked>> | 88% | 42,960 psi | 90% | 2470 fps | 98.2% |
| Lovex S070 | <<locked>> | 88% | 40,901 psi | 85% | 2451 fps | 96.7% |
| Norma MRP | <<locked>> | 98% | 41,872 psi | 87% | 2605 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 41,814 psi | 87% | 2523 fps | 99% |
| Ramshot Hunter | <<locked>> | 90% | 40,698 psi | 85% | 2513 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,027 psi | 75% | 1634 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,192 psi | 88% | 2454 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 40,799 psi | 85% | 2556 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,292 psi | 86% | 2543 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,220 psi | 86% | 2559 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 84% | 41,292 psi | 86% | 2464 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 86% | 41,858 psi | 87% | 2441 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 88% | 42,960 psi | 90% | 2470 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 88% | 40,901 psi | 85% | 2451 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 42,424 psi | 89% | 2513 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 40,988 psi | 86% | 2343 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,685 psi | 89% | 2425 fps | 96.9% |
| Somchem S355 | <<locked>> | 84% | 41,887 psi | 88% | 2464 fps | 99.8% |
| Somchem S365 | <<locked>> | 94% | 42,467 psi | 89% | 2572 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 42,322 psi | 88% | 2513 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 86% | 42,670 psi | 89% | 2444 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 40,944 psi | 86% | 2470 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 90% | 42,830 psi | 89% | 2523 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 98% | 41,350 psi | 86% | 2562 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 40,480 psi | 85% | 2448 fps | 99.8% |
| Winchester 760 | <<locked>> | 88% | 41,655 psi | 87% | 2523 fps | 96.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,737 psi | 75% | 2566 fps | 99.9% |
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% | 34,011 psi | 71% | 2359 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 39,842 psi | 83% | 2411 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,124 psi | 61% | 2254 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 39,073 psi | 82% | 2388 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,740 psi | 81% | 2411 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 29,979 psi | 63% | 2277 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,460 psi | 70% | 2395 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 86% | 25,933 psi | 54% | 2195 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 33,228 psi | 69% | 2398 fps | 95.3% |
| Alliant Reloder-26 | 47.3 gr | 90% | 31,430 psi | 66% | 2405 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 38,377 psi | 80% | 2415 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 39,175 psi | 82% | 2388 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 39,146 psi | 82% | 2418 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 36,419 psi | 76% | 2415 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,456 psi | 57% | 2185 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 86% | 38,464 psi | 80% | 2480 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,484 psi | 55% | 1427 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 39,494 psi | 83% | 2418 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 38,392 psi | 80% | 2372 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 28,616 psi | 60% | 2224 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 33,489 psi | 70% | 2277 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 36,100 psi | 75% | 2352 fps | 95.2% |
| Norma MRP | <<locked>> | 96% | 39,204 psi | 82% | 2549 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 29,834 psi | 62% | 2264 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 86% | 35,723 psi | 75% | 2408 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,672 psi | 56% | 1457 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,523 psi | 83% | 2405 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,679 psi | 75% | 2454 fps | 100% |
| ReloadSwiss RS 62 | 42 gr | 82% | 31,154 psi | 65% | 2326 fps | 95.9% |
| ReloadSwiss RS 70 | 43.8 gr | 84% | 33,620 psi | 70% | 2392 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 35,940 psi | 75% | 2362 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 39,175 psi | 82% | 2388 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,489 psi | 70% | 2277 fps | 95.5% |
| Shooters World SW4350 | <<locked>> | 84% | 36,100 psi | 75% | 2352 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,086 psi | 77% | 2411 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,522 psi | 80% | 2303 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,304 psi | 78% | 2323 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 36,869 psi | 77% | 2369 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 26,600 psi | 56% | 2218 fps | 97.7% |
| Somchem S385 | <<locked>> | 94% | 39,581 psi | 83% | 2461 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 35,027 psi | 73% | 2306 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 31,111 psi | 65% | 2264 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 30,661 psi | 64% | 2267 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 27,731 psi | 58% | 2264 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,951 psi | 65% | 2244 fps | 98.1% |
| Winchester 760 | <<locked>> | 84% | 36,419 psi | 76% | 2415 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 25,817 psi | 54% | 2264 fps | 96% |
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 47 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 166gr | Peregrine VRG-2. Alliant Reloder-26 delivers the highest muzzle velocity at 2,651 fps; across all powders the maximum-charge window runs from 1,598 fps to 2,651 fps. Accurate 3100 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 166.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-25 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 | 166gr | Peregrine VRG-2 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.