Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 175gr | Alaska Bullet Works Kodiak PP SPBC 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 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>> | 98% | 42,989 psi | 90% | 2461 fps | 98.5% |
| Accurate 4350 | <<locked>> | 88% | 42,467 psi | 89% | 2464 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,510 psi | 87% | 2474 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 41,133 psi | 86% | 2487 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,192 psi | 90% | 2530 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 40,727 psi | 85% | 2487 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,232 psi | 80% | 2457 fps | 98% |
| Alliant Reloder-26 | <<locked>> | 96% | 42,380 psi | 89% | 2589 fps | 99.5% |
| Bofors RP5 | <<locked>> | 98% | 43,192 psi | 90% | 2530 fps | 96.2% |
| Bofors RP7 | <<locked>> | 84% | 42,090 psi | 88% | 2379 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 86% | 41,959 psi | 88% | 2457 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 84% | 42,757 psi | 89% | 2425 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 40,901 psi | 85% | 2411 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 41,321 psi | 86% | 2477 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,114 psi | 75% | 1558 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 42,467 psi | 89% | 2408 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,031 psi | 86% | 2359 fps | 96.9% |
| IMR 4831 | <<locked>> | 88% | 40,640 psi | 85% | 2418 fps | 99.3% |
| Lovex S065 | <<locked>> | 84% | 40,654 psi | 85% | 2359 fps | 98.2% |
| Lovex S070 | <<locked>> | 86% | 41,437 psi | 87% | 2392 fps | 97.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,232 psi | 80% | 2375 fps | 97.4% |
| Norma MRP | <<locked>> | 96% | 42,366 psi | 89% | 2549 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 42,134 psi | 88% | 2457 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 40,988 psi | 86% | 2451 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,651 psi | 77% | 1598 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 40,973 psi | 86% | 2487 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 41,901 psi | 88% | 2480 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,408 psi | 87% | 2500 fps | 99% |
| Rottweil R 903 | <<locked>> | 82% | 41,655 psi | 87% | 2395 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 42,279 psi | 88% | 2470 fps | 96% |
| Rottweil R 907 | <<locked>> | 84% | 42,090 psi | 88% | 2379 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 40,654 psi | 85% | 2359 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 86% | 41,437 psi | 87% | 2392 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 42,859 psi | 90% | 2448 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,743 psi | 89% | 2356 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 41,887 psi | 88% | 2467 fps | 95.9% |
| Somchem S355 | <<locked>> | 82% | 42,351 psi | 88% | 2398 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 43,294 psi | 90% | 2510 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 42,830 psi | 89% | 2454 fps | 97% |
| Vihtavuori N150 | <<locked>> | 84% | 43,018 psi | 90% | 2379 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 41,176 psi | 86% | 2405 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 98% | 42,148 psi | 88% | 2428 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 88% | 43,149 psi | 90% | 2457 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 96% | 42,482 psi | 89% | 2510 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 40,611 psi | 85% | 2382 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,959 psi | 88% | 2457 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,841 psi | 81% | 2569 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% | 32,837 psi | 69% | 2267 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 32,329 psi | 68% | 2264 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,416 psi | 68% | 2277 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,056 psi | 75% | 2385 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 40,451 psi | 85% | 2477 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,990 psi | 52% | 2106 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 31,865 psi | 67% | 2303 fps | 95.5% |
| Alliant Reloder-26 | 45.2 gr | 86% | 30,124 psi | 63% | 2306 fps | 95.9% |
| Bofors RP5 | <<locked>> | 96% | 40,451 psi | 85% | 2477 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 37,231 psi | 78% | 2283 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 34,403 psi | 72% | 2303 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 82% | 40,045 psi | 84% | 2375 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,805 psi | 62% | 2182 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 84% | 38,479 psi | 80% | 2418 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,963 psi | 56% | 1391 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 37,347 psi | 78% | 2310 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,508 psi | 80% | 2310 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 31,270 psi | 65% | 2224 fps | 97% |
| Lovex S065 | <<locked>> | 80% | 35,998 psi | 75% | 2264 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 34,374 psi | 72% | 2247 fps | 95.2% |
| Lovex S071 | <<locked>> | 94% | 31,531 psi | 66% | 2238 fps | 95.2% |
| Norma MRP | 46.9 gr | 92% | 37,202 psi | 78% | 2441 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 32,605 psi | 68% | 2264 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 82% | 33,823 psi | 71% | 2300 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,238 psi | 57% | 1424 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,392 psi | 80% | 2438 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,807 psi | 66% | 2274 fps | 96.8% |
| ReloadSwiss RS 70 | 41.6 gr | 80% | 31,633 psi | 66% | 2277 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,233 psi | 82% | 2352 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 92% | 39,537 psi | 83% | 2418 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 37,231 psi | 78% | 2283 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,998 psi | 75% | 2264 fps | 97% |
| Shooters World SW4350 | <<locked>> | 80% | 34,374 psi | 72% | 2247 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,132 psi | 84% | 2398 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,317 psi | 74% | 2215 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 39,175 psi | 82% | 2415 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 39,653 psi | 83% | 2349 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 29,240 psi | 61% | 2224 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 37,550 psi | 78% | 2356 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 37,927 psi | 79% | 2293 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 33,881 psi | 71% | 2260 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 96% | 39,479 psi | 82% | 2382 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 33,257 psi | 69% | 2260 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 26,876 psi | 56% | 2172 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,214 psi | 69% | 2234 fps | 99.1% |
| Winchester 760 | <<locked>> | 80% | 34,403 psi | 72% | 2303 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,453 psi | 49% | 2123 fps | 95% |
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 | 175gr | Alaska Bullet Works Kodiak PP SPBC. Alliant Reloder-26 delivers the highest muzzle velocity at 2,589 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,589 fps. Alliant Reloder-25 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 75–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.284" calls for a 1:12.0 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 | 175gr | Alaska Bullet Works Kodiak PP SPBC 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.