Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 175gr | A-Square MONO RN bullet and 49 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD 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>> | 94% | 41,481 psi | 87% | 2461 fps | 98.6% |
| Accurate 4350 | <<locked>> | 84% | 40,625 psi | 85% | 2454 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 90% | 41,959 psi | 88% | 2487 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 86% | 42,192 psi | 88% | 2513 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 82% | 42,090 psi | 88% | 2530 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,640 psi | 87% | 2484 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,698 psi | 87% | 2533 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 42,177 psi | 88% | 2536 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,742 psi | 87% | 2562 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 92% | 40,785 psi | 85% | 2585 fps | 99.6% |
| Bofors RP15 | <<locked>> | 96% | 40,901 psi | 85% | 2516 fps | 96% |
| Bofors RP5 | <<locked>> | 94% | 41,698 psi | 87% | 2533 fps | 96.5% |
| Bofors RP7 | <<locked>> | 82% | 42,496 psi | 89% | 2418 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 84% | 42,859 psi | 90% | 2503 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 82% | 43,091 psi | 90% | 2464 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 42,018 psi | 88% | 2451 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 40,959 psi | 86% | 2589 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 84% | 42,003 psi | 88% | 2523 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,245 psi | 76% | 1594 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 42,873 psi | 90% | 2448 fps | 97.5% |
| IMR 4831 | <<locked>> | 86% | 41,684 psi | 87% | 2461 fps | 99.6% |
| Lovex S065 | <<locked>> | 82% | 41,205 psi | 86% | 2398 fps | 98.7% |
| Lovex S070 | <<locked>> | 84% | 42,090 psi | 88% | 2434 fps | 98% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,293 psi | 88% | 2477 fps | 98.7% |
| Norma 204 | <<locked>> | 86% | 42,685 psi | 89% | 2484 fps | 96.3% |
| Norma MRP | <<locked>> | 92% | 40,857 psi | 85% | 2549 fps | 97.7% |
| Norma URP | <<locked>> | 86% | 43,149 psi | 90% | 2500 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 86% | 41,916 psi | 88% | 2497 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 98% | 40,959 psi | 86% | 2503 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,057 psi | 77% | 1637 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 40,509 psi | 85% | 2477 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 42,235 psi | 88% | 2546 fps | 99.5% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,495 psi | 85% | 2579 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 90% | 40,466 psi | 85% | 2467 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 82% | 42,496 psi | 89% | 2418 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 41,205 psi | 86% | 2398 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 84% | 42,090 psi | 88% | 2434 fps | 98% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 43,091 psi | 90% | 2395 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,931 psi | 90% | 2516 fps | 96.8% |
| Somchem S365 | <<locked>> | 88% | 41,800 psi | 87% | 2507 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 41,220 psi | 86% | 2451 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 84% | 41,930 psi | 88% | 2444 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 96% | 43,265 psi | 90% | 2480 fps | 97.2% |
| Vihtavuori N550 | <<locked>> | 84% | 41,394 psi | 86% | 2451 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 92% | 41,307 psi | 86% | 2510 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 41,147 psi | 86% | 2418 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 42,859 psi | 90% | 2503 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,975 psi | 90% | 2684 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 40,741 psi | 85% | 2438 fps | 95.8% |
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>> | 84% | 29,646 psi | 62% | 2211 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 35,476 psi | 74% | 2352 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 88% | 39,494 psi | 83% | 2438 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,896 psi | 73% | 2362 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,334 psi | 82% | 2477 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 39,247 psi | 82% | 2438 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 92% | 39,001 psi | 81% | 2477 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,541 psi | 53% | 2146 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 90% | 30,574 psi | 64% | 2300 fps | 95.7% |
| Alliant Reloder-26 | 46.6 gr | 82% | 28,790 psi | 60% | 2297 fps | 95.9% |
| Bofors RP15 | <<locked>> | 94% | 38,479 psi | 80% | 2467 fps | 95.2% |
| Bofors RP5 | <<locked>> | 92% | 39,001 psi | 81% | 2477 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 39,784 psi | 83% | 2365 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 80% | 37,463 psi | 78% | 2395 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 40,582 psi | 85% | 2415 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,343 psi | 68% | 2264 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 98% | 38,334 psi | 80% | 2530 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 36,361 psi | 76% | 2405 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 57% | 1427 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 35,621 psi | 74% | 2303 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 34,171 psi | 71% | 2310 fps | 98.4% |
| Lovex S065 | <<locked>> | 80% | 38,841 psi | 81% | 2349 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 37,115 psi | 78% | 2336 fps | 96.8% |
| Lovex S071 | <<locked>> | 90% | 30,792 psi | 64% | 2241 fps | 95.5% |
| Norma 204 | <<locked>> | 84% | 39,929 psi | 83% | 2428 fps | 95.4% |
| Norma MRP | 47.5 gr | 86% | 33,489 psi | 70% | 2385 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 35,563 psi | 74% | 2352 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 80% | 34,360 psi | 72% | 2339 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 96% | 38,247 psi | 80% | 2448 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,543 psi | 58% | 1457 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,070 psi | 73% | 2369 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 34,432 psi | 72% | 2379 fps | 97.7% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 35,288 psi | 74% | 2454 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 88% | 38,000 psi | 79% | 2415 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 39,784 psi | 83% | 2365 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,841 psi | 81% | 2349 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 80% | 37,115 psi | 78% | 2336 fps | 96.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,942 psi | 79% | 2297 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 37,637 psi | 79% | 2411 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 31,995 psi | 67% | 2313 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 36,260 psi | 76% | 2352 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,811 psi | 77% | 2349 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 92% | 38,043 psi | 79% | 2382 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 36,245 psi | 76% | 2349 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 27,833 psi | 58% | 2215 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,940 psi | 75% | 2320 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 37,681 psi | 79% | 2402 fps | 96.8% |
| Winchester StaBALL HD | 43.7 gr | 80% | 22,510 psi | 47% | 2116 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 90% | 38,043 psi | 79% | 2385 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 65 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 175gr | A-Square MONO RN. Winchester StaBALL HD delivers the highest muzzle velocity at 2,684 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,684 fps. ADI AR 2217 gives the best case fill at 100 %, and 65 of the 65 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.284" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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, Winchester StaBALL HD, Norma MRP rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 175gr | A-Square MONO RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, ADI AR 2217 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.