Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 135gr | Atomic 29 HP bullet and 52 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 2495 | <<locked>> | 84% | 42,206 psi | 88% | 2680 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,438 psi | 89% | 2720 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 40,828 psi | 85% | 2759 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 86% | 42,018 psi | 88% | 2690 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,090 psi | 88% | 2818 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 41,205 psi | 86% | 2710 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 84% | 41,684 psi | 87% | 2723 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,031 psi | 86% | 2769 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 90% | 40,973 psi | 86% | 2802 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,954 psi | 73% | 2654 fps | 96.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,540 psi | 89% | 2736 fps | 97.4% |
| Bofors RP3 | <<locked>> | 86% | 40,988 psi | 86% | 2717 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 86% | 41,959 psi | 88% | 2717 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,569 psi | 89% | 2759 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,438 psi | 89% | 2776 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,911 psi | 73% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,192 psi | 88% | 2700 fps | 98.7% |
| IMR 3031 | <<locked>> | 82% | 43,004 psi | 90% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 41,365 psi | 86% | 2671 fps | 97.7% |
| IMR 4831 | <<locked>> | 96% | 42,032 psi | 88% | 2762 fps | 97.3% |
| IMR 4895 | <<locked>> | 84% | 42,656 psi | 89% | 2756 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 82% | 42,380 psi | 89% | 2720 fps | 99.9% |
| Lovex S062 | <<locked>> | 84% | 41,147 psi | 86% | 2674 fps | 99.1% |
| Lovex S065 | <<locked>> | 92% | 43,076 psi | 90% | 2710 fps | 95.9% |
| Norma 201 | <<locked>> | 82% | 42,540 psi | 89% | 2687 fps | 99.2% |
| Norma 202 | <<locked>> | 82% | 42,917 psi | 90% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 84% | 41,002 psi | 86% | 2710 fps | 98.1% |
| Norma URP | <<locked>> | 94% | 41,089 psi | 86% | 2756 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 84% | 40,524 psi | 85% | 2720 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 74% | 1811 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 40,553 psi | 85% | 2766 fps | 97.5% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 40,712 psi | 85% | 2808 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 43,308 psi | 90% | 2831 fps | 97.2% |
| Rottweil R 902 | <<locked>> | 84% | 43,047 psi | 90% | 2690 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 88% | 40,886 psi | 85% | 2707 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,076 psi | 90% | 2710 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,380 psi | 89% | 2720 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 41,147 psi | 86% | 2674 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,235 psi | 88% | 2762 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,887 psi | 88% | 2703 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 41,452 psi | 87% | 2605 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 41,713 psi | 87% | 2710 fps | 98.6% |
| Somchem S365 | <<locked>> | 98% | 41,611 psi | 87% | 2815 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 84% | 42,177 psi | 88% | 2674 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 43,294 psi | 90% | 2687 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 42,656 psi | 89% | 2700 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 94% | 43,105 psi | 90% | 2756 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 84% | 41,553 psi | 87% | 2674 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,308 psi | 88% | 2759 fps | 96.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,289 psi | 78% | 2733 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,973 psi | 86% | 2687 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,205 psi | 86% | 2707 fps | 98.6% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 37,086 psi | 77% | 2585 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,070 psi | 73% | 2572 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 35,491 psi | 74% | 2641 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 34,853 psi | 73% | 2530 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,796 psi | 77% | 2690 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,084 psi | 71% | 2552 fps | 97.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,593 psi | 76% | 2612 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,172 psi | 76% | 2654 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 82% | 31,372 psi | 66% | 2559 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,822 psi | 69% | 2598 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,668 psi | 83% | 2677 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 33,518 psi | 70% | 2552 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 84% | 39,320 psi | 82% | 2661 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,125 psi | 65% | 2497 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,014 psi | 77% | 2657 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 54% | 1578 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,566 psi | 83% | 2648 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 40,408 psi | 84% | 2697 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,550 psi | 76% | 2566 fps | 96.4% |
| IMR 4831 | <<locked>> | 92% | 36,825 psi | 77% | 2654 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 37,463 psi | 78% | 2644 fps | 97.3% |
| Lovex D073.6 | <<locked>> | 80% | 39,392 psi | 82% | 2661 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 36,129 psi | 75% | 2569 fps | 98.1% |
| Lovex S065 | <<locked>> | 90% | 40,437 psi | 84% | 2657 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 40,161 psi | 84% | 2641 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 40,219 psi | 84% | 2654 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,998 psi | 75% | 2598 fps | 96.8% |
| Norma URP | <<locked>> | 90% | 36,071 psi | 75% | 2644 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 35,418 psi | 74% | 2608 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 55% | 1614 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,898 psi | 79% | 2710 fps | 96.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,372 psi | 66% | 2569 fps | 97.9% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,000 psi | 79% | 2717 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 38,101 psi | 80% | 2592 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 31,459 psi | 66% | 2493 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,437 psi | 84% | 2657 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,392 psi | 82% | 2661 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 36,129 psi | 75% | 2569 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,503 psi | 68% | 2539 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,291 psi | 82% | 2648 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,403 psi | 72% | 2467 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 32,547 psi | 68% | 2503 fps | 96.1% |
| Somchem S365 | <<locked>> | 86% | 28,413 psi | 59% | 2480 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 37,275 psi | 78% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,000 psi | 79% | 2585 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 30,821 psi | 64% | 2441 fps | 97% |
| Vihtavuori N160 | <<locked>> | 90% | 37,884 psi | 79% | 2648 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 36,564 psi | 76% | 2572 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 37,173 psi | 78% | 2651 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 98% | 34,896 psi | 73% | 2674 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,473 psi | 66% | 2464 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,653 psi | 81% | 2654 fps | 98.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 76 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 135gr | Atomic 29 HP. ReloadSwiss RS 62 delivers the highest muzzle velocity at 2,831 fps; across all powders the maximum-charge window runs from 1,765 fps to 2,831 fps. Accurate 3100 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, Alliant Reloder-23 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. As outliers, Accurate 2700, Accurate 3100, Alliant Reloder-19 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.