Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 175gr | Nosler Partition bullet and 45 powders. The key underlying parameters are shown in the table above.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 41,350 psi | 86% | 2425 fps | 98% |
| Accurate 4350 | <<locked>> | 88% | 41,147 psi | 86% | 2434 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 43,207 psi | 90% | 2408 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,888 psi | 90% | 2487 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 86% | 42,801 psi | 89% | 2507 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,206 psi | 88% | 2503 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,028 psi | 77% | 2418 fps | 97.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 40,959 psi | 86% | 2552 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 43,279 psi | 90% | 2418 fps | 100% |
| Bofors RP7 | <<locked>> | 84% | 40,930 psi | 86% | 2346 fps | 96.2% |
| Hodgdon H414 | <<locked>> | 86% | 40,785 psi | 85% | 2428 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 42,583 psi | 89% | 2431 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 42,873 psi | 90% | 2493 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 75% | 1545 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 41,394 psi | 86% | 2379 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,583 psi | 89% | 2375 fps | 97.1% |
| IMR 4831 | <<locked>> | 90% | 42,221 psi | 88% | 2434 fps | 99.4% |
| Lovex S065 | <<locked>> | 86% | 42,163 psi | 88% | 2375 fps | 98.3% |
| Lovex S070 | <<locked>> | 88% | 42,728 psi | 89% | 2405 fps | 97.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,941 psi | 77% | 2343 fps | 96.9% |
| Norma MRP | <<locked>> | 96% | 41,234 psi | 86% | 2516 fps | 96.9% |
| Norma URP | <<locked>> | 88% | 40,872 psi | 85% | 2425 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 90% | 42,424 psi | 89% | 2467 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,303 psi | 76% | 1581 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 42,612 psi | 89% | 2507 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 40,712 psi | 85% | 2451 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 42,960 psi | 90% | 2516 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 43,192 psi | 90% | 2411 fps | 100% |
| Rottweil R 907 | <<locked>> | 84% | 40,930 psi | 86% | 2346 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 42,163 psi | 88% | 2375 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 88% | 42,728 psi | 89% | 2405 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 41,626 psi | 87% | 2418 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 42,757 psi | 89% | 2290 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,640 psi | 87% | 2326 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 43,178 psi | 90% | 2480 fps | 96% |
| Somchem S355 | <<locked>> | 82% | 41,278 psi | 86% | 2372 fps | 99.9% |
| Somchem S365 | <<locked>> | 92% | 41,771 psi | 87% | 2477 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 41,539 psi | 87% | 2421 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 84% | 41,800 psi | 87% | 2349 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 42,772 psi | 89% | 2421 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 88% | 42,032 psi | 88% | 2428 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 96% | 41,002 psi | 86% | 2474 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 42,380 psi | 89% | 2402 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,785 psi | 85% | 2428 fps | 97% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,594 psi | 79% | 2533 fps | 100% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 31,589 psi | 66% | 2231 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 31,328 psi | 65% | 2234 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,669 psi | 85% | 2365 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,575 psi | 66% | 2244 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,969 psi | 73% | 2352 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,352 psi | 51% | 2073 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 96% | 32,779 psi | 68% | 2316 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 86% | 29,138 psi | 61% | 2270 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 40,422 psi | 84% | 2372 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 38,551 psi | 81% | 2300 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 82% | 35,636 psi | 74% | 2323 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,921 psi | 60% | 2152 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 84% | 37,362 psi | 78% | 2382 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,701 psi | 56% | 1378 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 38,725 psi | 81% | 2329 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,623 psi | 79% | 2280 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 30,327 psi | 63% | 2195 fps | 96.5% |
| Lovex S065 | <<locked>> | 80% | 35,085 psi | 73% | 2238 fps | 96.5% |
| Lovex S070 | <<locked>> | 82% | 35,534 psi | 74% | 2267 fps | 95.5% |
| Lovex S071 | <<locked>> | 96% | 32,489 psi | 68% | 2251 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 36,114 psi | 75% | 2408 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 31,662 psi | 66% | 2234 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 82% | 32,822 psi | 69% | 2267 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 57% | 1414 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,202 psi | 78% | 2405 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,966 psi | 65% | 2247 fps | 96.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 30,966 psi | 65% | 2251 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 38,145 psi | 80% | 2323 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 38,551 psi | 81% | 2300 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,085 psi | 73% | 2238 fps | 96.5% |
| Shooters World SW4350 | <<locked>> | 82% | 35,534 psi | 74% | 2267 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,870 psi | 81% | 2369 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,205 psi | 84% | 2251 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 36,593 psi | 76% | 2234 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 40,567 psi | 85% | 2431 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 38,595 psi | 81% | 2323 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 28,398 psi | 59% | 2195 fps | 98.8% |
| Somchem S385 | <<locked>> | 92% | 39,102 psi | 82% | 2375 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 36,970 psi | 77% | 2267 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 32,953 psi | 69% | 2234 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 80% | 32,401 psi | 68% | 2234 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 26,063 psi | 54% | 2142 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,561 psi | 68% | 2211 fps | 98.9% |
| Winchester 760 | <<locked>> | 82% | 35,868 psi | 75% | 2326 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 86% | 24,279 psi | 51% | 2142 fps | 95.4% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 45 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 175gr | Nosler Partition. Alliant Reloder-26 delivers the highest muzzle velocity at 2,552 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,552 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 45 of the 45 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.284" calls for a 1:10.5 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.