Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 170gr | Geco SOFTPOINT bullet and 44 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 Norma MRP.
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 3100 | <<locked>> | 96% | 40,567 psi | 85% | 2464 fps | 97.9% |
| Accurate 4350 | <<locked>> | 88% | 42,656 psi | 89% | 2513 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,756 psi | 87% | 2523 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 41,597 psi | 87% | 2539 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 98% | 41,118 psi | 86% | 2539 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,450 psi | 80% | 2503 fps | 98% |
| Alliant Reloder-26 | <<locked>> | 96% | 42,844 psi | 90% | 2641 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 42,148 psi | 88% | 2425 fps | 96.6% |
| Hodgdon H414 | <<locked>> | 86% | 42,409 psi | 89% | 2513 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 84% | 43,004 psi | 90% | 2477 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 41,394 psi | 86% | 2464 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 41,437 psi | 87% | 2523 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,085 psi | 75% | 1594 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 42,641 psi | 89% | 2457 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,162 psi | 86% | 2405 fps | 96.8% |
| IMR 4831 | <<locked>> | 88% | 41,104 psi | 86% | 2470 fps | 99.3% |
| Lovex S065 | <<locked>> | 84% | 41,017 psi | 86% | 2408 fps | 98.1% |
| Lovex S070 | <<locked>> | 86% | 41,684 psi | 87% | 2441 fps | 97.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,696 psi | 81% | 2428 fps | 97.4% |
| Norma MRP | <<locked>> | 96% | 42,902 psi | 90% | 2605 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 42,612 psi | 89% | 2510 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 41,307 psi | 86% | 2500 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 76% | 1634 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 41,220 psi | 86% | 2536 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 42,525 psi | 89% | 2536 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,626 psi | 87% | 2549 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 82% | 42,090 psi | 88% | 2448 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 42,554 psi | 89% | 2523 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 84% | 42,148 psi | 88% | 2425 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,017 psi | 86% | 2408 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 86% | 41,684 psi | 87% | 2441 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 43,149 psi | 90% | 2497 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,917 psi | 90% | 2405 fps | 97.4% |
| Somchem S355 | <<locked>> | 82% | 42,496 psi | 89% | 2448 fps | 99.9% |
| Somchem S365 | <<locked>> | 90% | 40,828 psi | 85% | 2513 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 43,279 psi | 90% | 2507 fps | 97% |
| Vihtavuori N150 | <<locked>> | 82% | 40,712 psi | 85% | 2385 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 41,408 psi | 87% | 2454 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 98% | 42,482 psi | 89% | 2480 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 86% | 40,872 psi | 85% | 2461 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 96% | 42,728 psi | 89% | 2559 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 40,857 psi | 85% | 2431 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 42,409 psi | 89% | 2513 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,233 psi | 82% | 2625 fps | 100% |
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>> | 90% | 33,185 psi | 69% | 2316 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 32,518 psi | 68% | 2310 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,605 psi | 68% | 2323 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,332 psi | 76% | 2438 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 82% | 25,121 psi | 52% | 2146 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 94% | 32,039 psi | 67% | 2349 fps | 95.4% |
| Alliant Reloder-26 | 46.6 gr | 86% | 30,356 psi | 63% | 2356 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 37,449 psi | 78% | 2329 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 34,751 psi | 73% | 2352 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 82% | 40,393 psi | 84% | 2425 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,979 psi | 63% | 2228 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 84% | 38,682 psi | 81% | 2467 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,919 psi | 56% | 1424 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 37,608 psi | 79% | 2359 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,682 psi | 81% | 2356 fps | 96.1% |
| IMR 4831 | <<locked>> | 80% | 31,662 psi | 66% | 2274 fps | 97% |
| Lovex S065 | <<locked>> | 80% | 36,187 psi | 76% | 2313 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 34,534 psi | 72% | 2293 fps | 95.1% |
| Lovex S071 | <<locked>> | 94% | 31,894 psi | 67% | 2287 fps | 95.2% |
| Norma MRP | 48.4 gr | 92% | 37,550 psi | 78% | 2493 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 32,793 psi | 69% | 2310 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 82% | 34,026 psi | 71% | 2346 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 57% | 1457 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,682 psi | 81% | 2490 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,097 psi | 67% | 2323 fps | 96.8% |
| ReloadSwiss RS 70 | 42.9 gr | 80% | 31,850 psi | 67% | 2326 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,450 psi | 82% | 2398 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 92% | 39,827 psi | 83% | 2470 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 37,449 psi | 78% | 2329 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,187 psi | 76% | 2313 fps | 96.9% |
| Shooters World SW4350 | <<locked>> | 80% | 34,534 psi | 72% | 2293 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,248 psi | 84% | 2448 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,447 psi | 74% | 2260 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 39,900 psi | 83% | 2398 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 29,399 psi | 61% | 2270 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 37,884 psi | 79% | 2402 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 38,130 psi | 80% | 2339 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 34,069 psi | 71% | 2306 fps | 97.5% |
| Vihtavuori N165 | <<locked>> | 96% | 39,885 psi | 83% | 2431 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 33,620 psi | 70% | 2313 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 27,064 psi | 57% | 2215 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,591 psi | 70% | 2287 fps | 99.1% |
| Winchester 760 | <<locked>> | 80% | 34,751 psi | 73% | 2352 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 25,164 psi | 53% | 2224 fps | 96.3% |
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 44 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 170gr | Geco SOFTPOINT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,641 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,641 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 44 of the 44 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 170.0 gr projectile in 0.284" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon TrailBoss, Lovex S071 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, Norma MRP rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 170gr | Geco SOFTPOINT 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.