Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 160gr | Sierra Tipped MatchKing bullet and 48 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% | 39,871 psi | 83% | 2500 fps | 96.6% |
| Accurate 4064 | <<locked>> | 82% | 41,394 psi | 86% | 2464 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 42,525 psi | 89% | 2566 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 84% | 42,815 psi | 89% | 2484 fps | 99% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 43,047 psi | 90% | 2615 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,438 psi | 89% | 2503 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,786 psi | 89% | 2516 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,119 psi | 88% | 2575 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 88% | 42,090 psi | 88% | 2602 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,450 psi | 80% | 2533 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,801 psi | 89% | 2687 fps | 98.7% |
| Bofors RP3 | <<locked>> | 84% | 42,293 psi | 88% | 2513 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 84% | 43,120 psi | 90% | 2516 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 90% | 42,540 psi | 89% | 2562 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 41,249 psi | 86% | 2513 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,360 psi | 74% | 1608 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,366 psi | 89% | 2467 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 42,090 psi | 88% | 2464 fps | 95.8% |
| IMR 4831 | <<locked>> | 92% | 41,031 psi | 86% | 2520 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 42,322 psi | 88% | 2470 fps | 99.9% |
| Lovex S065 | <<locked>> | 88% | 41,466 psi | 87% | 2464 fps | 97.2% |
| Lovex S070 | <<locked>> | 90% | 41,916 psi | 88% | 2490 fps | 96.2% |
| Norma 203B | <<locked>> | 82% | 42,134 psi | 88% | 2507 fps | 99.4% |
| Norma MRPᴾ | <<locked>> | 100% | 42,888 psi | 90% | 2644 fps | 96% |
| Norma URP | <<locked>> | 92% | 42,627 psi | 89% | 2562 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 82% | 41,640 psi | 87% | 2520 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 92% | 41,684 psi | 87% | 2552 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,114 psi | 75% | 1650 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,930 psi | 86% | 2451 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 41,959 psi | 88% | 2605 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,163 psi | 88% | 2585 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,366 psi | 89% | 2602 fps | 98% |
| Rottweil R 903 | <<locked>> | 86% | 42,511 psi | 89% | 2510 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,466 psi | 87% | 2464 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 42,322 psi | 88% | 2470 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 90% | 41,916 psi | 88% | 2490 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 40,915 psi | 85% | 2513 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,322 psi | 88% | 2392 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 43,033 psi | 90% | 2510 fps | 99.7% |
| Somchem S365 | <<locked>> | 94% | 40,756 psi | 85% | 2569 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 41,321 psi | 86% | 2448 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 90% | 41,771 psi | 87% | 2510 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 82% | 42,743 psi | 89% | 2464 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 41,017 psi | 86% | 2513 fps | 98.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,916 psi | 88% | 2605 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 41,597 psi | 87% | 2490 fps | 99.7% |
| Winchester 760 | <<locked>> | 90% | 42,830 psi | 89% | 2569 fps | 96.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,418 psi | 72% | 2543 fps | 99.3% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 37,362 psi | 78% | 2451 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 38,638 psi | 81% | 2418 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 30,226 psi | 63% | 2306 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 37,942 psi | 79% | 2388 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,234 psi | 84% | 2559 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,289 psi | 78% | 2408 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,277 psi | 84% | 2470 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 30,995 psi | 65% | 2320 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,227 psi | 67% | 2382 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,456 psi | 59% | 2287 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 92% | 32,430 psi | 68% | 2444 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 37,086 psi | 77% | 2415 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 80% | 37,884 psi | 79% | 2418 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 39,769 psi | 83% | 2507 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,600 psi | 56% | 2175 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,556 psi | 55% | 1440 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,842 psi | 83% | 2421 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 39,726 psi | 83% | 2418 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 31,546 psi | 66% | 2320 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 39,523 psi | 83% | 2418 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 34,708 psi | 73% | 2323 fps | 95.1% |
| Lovex S070 | <<locked>> | 88% | 39,508 psi | 83% | 2444 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 39,668 psi | 83% | 2461 fps | 99% |
| Norma MRP | <<locked>> | 98% | 40,089 psi | 84% | 2585 fps | 95.1% |
| Norma URP | <<locked>> | 82% | 30,864 psi | 64% | 2310 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 38,943 psi | 81% | 2467 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 36,579 psi | 76% | 2448 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,774 psi | 56% | 1470 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,348 psi | 80% | 2402 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,301 psi | 72% | 2444 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,329 psi | 68% | 2375 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 34,780 psi | 73% | 2434 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 34,983 psi | 73% | 2365 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 34,708 psi | 73% | 2323 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 39,523 psi | 83% | 2418 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 39,508 psi | 83% | 2444 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,752 psi | 75% | 2408 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,391 psi | 78% | 2310 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 35,621 psi | 74% | 2365 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 25,991 psi | 54% | 2218 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 80% | 34,040 psi | 71% | 2310 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 32,184 psi | 67% | 2310 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 39,987 psi | 84% | 2418 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 31,734 psi | 66% | 2316 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 88% | 28,413 psi | 59% | 2303 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,994 psi | 63% | 2238 fps | 97% |
| Winchester 760 | <<locked>> | 88% | 40,016 psi | 84% | 2513 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,760 psi | 56% | 2303 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 48 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 160gr | Sierra Tipped MatchKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,687 fps; across all powders the maximum-charge window runs from 1,608 fps to 2,687 fps. Accurate 3100 gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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.