Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 155gr | TWENTY-NINE ERTP bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and ReloadSwiss RS 62.
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 2495 | <<locked>> | 84% | 43,149 psi | 90% | 2484 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 40,640 psi | 85% | 2480 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 41,800 psi | 87% | 2575 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 86% | 42,670 psi | 89% | 2500 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,960 psi | 90% | 2628 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 42,076 psi | 88% | 2520 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,424 psi | 89% | 2530 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,843 psi | 87% | 2585 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 90% | 41,539 psi | 87% | 2608 fps | 99.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,534 psi | 74% | 2484 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,233 psi | 82% | 2621 fps | 96.8% |
| Bofors RP3 | <<locked>> | 86% | 41,887 psi | 88% | 2530 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 86% | 42,917 psi | 90% | 2533 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 43,279 psi | 90% | 2569 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 43,120 psi | 90% | 2579 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,288 psi | 74% | 1614 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,960 psi | 90% | 2510 fps | 99.3% |
| IMR 4064 | <<locked>> | 84% | 42,090 psi | 88% | 2480 fps | 98.6% |
| IMR 4831 | <<locked>> | 96% | 42,815 psi | 89% | 2575 fps | 98.3% |
| IMR 4895 | <<locked>> | 82% | 40,799 psi | 85% | 2510 fps | 98.8% |
| Lovex S062 | <<locked>> | 84% | 41,916 psi | 88% | 2484 fps | 99.6% |
| Lovex S065 | <<locked>> | 90% | 41,350 psi | 86% | 2477 fps | 96.4% |
| Norma 203B | <<locked>> | 84% | 41,742 psi | 87% | 2520 fps | 98.9% |
| Norma URP | <<locked>> | 94% | 41,858 psi | 87% | 2569 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 84% | 41,350 psi | 86% | 2536 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 94% | 40,944 psi | 86% | 2556 fps | 95.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,708 psi | 75% | 1654 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,524 psi | 87% | 2579 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,597 psi | 87% | 2618 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 41,408 psi | 87% | 2592 fps | 97.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,887 psi | 88% | 2605 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 82% | 41,336 psi | 86% | 2454 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 88% | 41,756 psi | 87% | 2520 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,350 psi | 86% | 2477 fps | 96.4% |
| Shooters World Precision | <<locked>> | 84% | 41,916 psi | 88% | 2484 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,960 psi | 90% | 2572 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,699 psi | 89% | 2513 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 42,119 psi | 88% | 2411 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 42,743 psi | 89% | 2526 fps | 99.4% |
| Somchem S365 | <<locked>> | 98% | 42,337 psi | 88% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 40,553 psi | 85% | 2434 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 41,234 psi | 86% | 2444 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 40,770 psi | 85% | 2464 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 92% | 41,321 psi | 86% | 2523 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 42,496 psi | 89% | 2487 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 43,163 psi | 90% | 2575 fps | 98% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,130 psi | 80% | 2556 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 41,452 psi | 87% | 2503 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,763 psi | 66% | 2467 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 42,018 psi | 88% | 2516 fps | 99.3% |
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 2495 | <<locked>> | 80% | 37,768 psi | 79% | 2395 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,737 psi | 75% | 2388 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 31,560 psi | 66% | 2362 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 35,549 psi | 74% | 2356 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,608 psi | 79% | 2516 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,722 psi | 73% | 2375 fps | 98.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,376 psi | 78% | 2431 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 32,648 psi | 68% | 2375 fps | 95.1% |
| Alliant Reloder-17 | 38 gr | 80% | 30,023 psi | 63% | 2339 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,617 psi | 62% | 2333 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,579 psi | 76% | 2559 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 34,185 psi | 71% | 2375 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 80% | 35,186 psi | 74% | 2379 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,094 psi | 59% | 2234 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,695 psi | 79% | 2474 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,136 psi | 55% | 1437 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,350 psi | 84% | 2461 fps | 99% |
| IMR 4064 | <<locked>> | 80% | 37,304 psi | 78% | 2388 fps | 97.6% |
| IMR 4831 | <<locked>> | 88% | 33,069 psi | 69% | 2379 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 38,276 psi | 80% | 2461 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 36,883 psi | 77% | 2388 fps | 99% |
| Lovex S065 | <<locked>> | 88% | 38,899 psi | 81% | 2431 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 36,767 psi | 77% | 2421 fps | 97.9% |
| Norma URP | <<locked>> | 86% | 32,416 psi | 68% | 2369 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 36,245 psi | 76% | 2434 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 92% | 38,537 psi | 81% | 2507 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,324 psi | 55% | 1470 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,841 psi | 81% | 2526 fps | 98% |
| ReloadSwiss RS 60 | 38 gr | 80% | 31,952 psi | 67% | 2402 fps | 99% |
| ReloadSwiss RS 62 | 41.8 gr | 88% | 34,011 psi | 71% | 2434 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 36,796 psi | 77% | 2493 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 38,783 psi | 81% | 2405 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 32,140 psi | 67% | 2323 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,899 psi | 81% | 2431 fps | 95.7% |
| Shooters World Precision | <<locked>> | 80% | 36,883 psi | 77% | 2388 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,199 psi | 69% | 2369 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,118 psi | 84% | 2467 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,114 psi | 73% | 2287 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 33,141 psi | 69% | 2329 fps | 97.4% |
| Somchem S365 | <<locked>> | 82% | 25,527 psi | 53% | 2218 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 38,218 psi | 80% | 2395 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,696 psi | 81% | 2398 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,444 psi | 66% | 2274 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 86% | 33,852 psi | 71% | 2369 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 37,260 psi | 78% | 2392 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 33,330 psi | 70% | 2372 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 94% | 31,430 psi | 66% | 2402 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,181 psi | 59% | 2201 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,718 psi | 62% | 2405 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,421 psi | 82% | 2470 fps | 98.9% |
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 50 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 155gr | TWENTY-NINE ERTP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,628 fps; across all powders the maximum-charge window runs from 1,614 fps to 2,628 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 50 of the 50 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 66–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon TrailBoss 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. ReloadSwiss RS 60, Alliant Reloder-17, ReloadSwiss RS 62 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 155gr | TWENTY-NINE ERTP 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.