Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 160gr | Speer Deep Curl Soft Point bullet and 46 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.
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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100ᴾ | <<locked>> | 100% | 43,178 psi | 90% | 2579 fps | 97.8% |
| Accurate 4350 | <<locked>> | 90% | 42,844 psi | 90% | 2589 fps | 99% |
| ADI AR 2208 | <<locked>> | 82% | 42,453 psi | 89% | 2497 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 42,192 psi | 88% | 2520 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 41,945 psi | 88% | 2595 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 86% | 41,916 psi | 88% | 2618 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,060 psi | 86% | 2608 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,172 psi | 76% | 2510 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,931 psi | 90% | 2713 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 42,018 psi | 88% | 2526 fps | 99.9% |
| Bofors RP7 | <<locked>> | 86% | 42,786 psi | 89% | 2500 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 82% | 42,902 psi | 90% | 2533 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 88% | 42,395 psi | 89% | 2579 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 41,408 psi | 87% | 2536 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 88% | 42,061 psi | 88% | 2598 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,810 psi | 75% | 1637 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 42,830 psi | 89% | 2526 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,756 psi | 87% | 2484 fps | 96.2% |
| IMR 4831 | <<locked>> | 90% | 41,031 psi | 86% | 2539 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 41,234 psi | 86% | 2480 fps | 97.5% |
| Lovex S070 | <<locked>> | 88% | 41,843 psi | 87% | 2513 fps | 96.6% |
| Norma MRP | <<locked>> | 98% | 42,844 psi | 90% | 2667 fps | 96.6% |
| Norma URP | <<locked>> | 90% | 42,612 psi | 89% | 2582 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 90% | 41,582 psi | 87% | 2575 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,260 psi | 76% | 1677 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,062 psi | 90% | 2516 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 41,582 psi | 87% | 2618 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 42,264 psi | 88% | 2605 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 42,003 psi | 88% | 2621 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 84% | 42,177 psi | 88% | 2523 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 86% | 42,786 psi | 89% | 2500 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 41,234 psi | 86% | 2480 fps | 97.5% |
| Shooters World SW4350 | <<locked>> | 88% | 41,843 psi | 87% | 2513 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 40,567 psi | 85% | 2523 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 41,742 psi | 87% | 2402 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,843 psi | 85% | 2431 fps | 96.1% |
| Somchem S355 | <<locked>> | 84% | 42,975 psi | 90% | 2526 fps | 99.8% |
| Somchem S365 | <<locked>> | 92% | 40,654 psi | 85% | 2585 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 43,250 psi | 90% | 2572 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 84% | 40,886 psi | 85% | 2461 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 41,756 psi | 87% | 2530 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 88% | 40,901 psi | 85% | 2533 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 98% | 42,395 psi | 89% | 2628 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 41,278 psi | 86% | 2507 fps | 99.8% |
| Winchester 760 | <<locked>> | 88% | 42,641 psi | 89% | 2585 fps | 96.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,709 psi | 77% | 2628 fps | 99.9% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 35,244 psi | 74% | 2425 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 30,400 psi | 64% | 2323 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 39,813 psi | 83% | 2448 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,566 psi | 83% | 2470 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,748 psi | 64% | 2336 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,127 psi | 71% | 2451 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,687 psi | 56% | 2251 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 34,069 psi | 71% | 2457 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 90% | 32,576 psi | 68% | 2474 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 39,378 psi | 82% | 2477 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 40,190 psi | 84% | 2451 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 40,016 psi | 84% | 2480 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 37,275 psi | 78% | 2477 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,326 psi | 59% | 2244 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 86% | 39,291 psi | 82% | 2539 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 56% | 1460 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 40,219 psi | 84% | 2477 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,262 psi | 82% | 2431 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 29,530 psi | 62% | 2287 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 34,389 psi | 72% | 2336 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 36,883 psi | 77% | 2411 fps | 95.1% |
| Norma MRP | <<locked>> | 96% | 40,205 psi | 84% | 2615 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 30,690 psi | 64% | 2323 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 86% | 36,506 psi | 76% | 2467 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,137 psi | 57% | 1499 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,480 psi | 85% | 2467 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,347 psi | 76% | 2510 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,124 psi | 63% | 2336 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 32,343 psi | 68% | 2395 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 36,985 psi | 77% | 2425 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 40,190 psi | 84% | 2451 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,389 psi | 72% | 2336 fps | 95.5% |
| Shooters World SW4350 | <<locked>> | 84% | 36,883 psi | 77% | 2411 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,029 psi | 79% | 2474 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,334 psi | 82% | 2362 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 38,276 psi | 80% | 2382 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 37,797 psi | 79% | 2428 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 27,659 psi | 58% | 2283 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 40,567 psi | 85% | 2523 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 35,882 psi | 75% | 2365 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 32,111 psi | 67% | 2326 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 31,473 psi | 66% | 2326 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 28,616 psi | 60% | 2323 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,734 psi | 66% | 2303 fps | 98% |
| Winchester 760 | <<locked>> | 84% | 37,275 psi | 78% | 2477 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,832 psi | 56% | 2333 fps | 96.2% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 70 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 160gr | Speer Deep Curl Soft Point. Alliant Reloder-26 delivers the highest muzzle velocity at 2,713 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,713 fps. Accurate 3100 gives the best case fill at 100 %, and 70 of the 70 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:12.5 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. As outliers, Accurate High Country, ADI AR 2209, ADI AR 2213 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.