Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 120gr | Barnes X BT bullet and 38 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>> | 82% | 41,669 psi | 87% | 2805 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 41,568 psi | 87% | 2841 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 86% | 42,177 psi | 88% | 2828 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,554 psi | 89% | 2959 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 41,858 psi | 87% | 2858 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,337 psi | 88% | 2871 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 41,336 psi | 86% | 2940 fps | 97.5% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,772 psi | 89% | 2877 fps | 96.2% |
| Bofors RP3 | <<locked>> | 86% | 41,916 psi | 88% | 2871 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,844 psi | 90% | 2897 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,612 psi | 89% | 2917 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,288 psi | 74% | 1883 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,453 psi | 89% | 2844 fps | 97.8% |
| IMR 4064 | <<locked>> | 84% | 41,742 psi | 87% | 2812 fps | 96.6% |
| IMR 4831 | <<locked>> | 96% | 42,337 psi | 88% | 2904 fps | 96.1% |
| IMR 4895 | <<locked>> | 82% | 40,814 psi | 85% | 2851 fps | 97% |
| Lovex D073.6 | <<locked>> | 82% | 43,047 psi | 90% | 2871 fps | 99.6% |
| Lovex S062 | <<locked>> | 84% | 41,945 psi | 88% | 2825 fps | 98.4% |
| Norma 203B | <<locked>> | 84% | 41,727 psi | 87% | 2861 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 84% | 41,046 psi | 86% | 2867 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,650 psi | 74% | 1926 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 40,988 psi | 86% | 2913 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,176 psi | 86% | 2953 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 82% | 41,771 psi | 87% | 2799 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 88% | 41,727 psi | 87% | 2858 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 43,047 psi | 90% | 2871 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 41,945 psi | 88% | 2825 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,641 psi | 89% | 2907 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,366 psi | 89% | 2848 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 41,843 psi | 87% | 2753 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 42,714 psi | 89% | 2867 fps | 97.9% |
| Somchem S365 | <<locked>> | 98% | 42,177 psi | 88% | 2959 fps | 99% |
| Vihtavuori N135 | <<locked>> | 84% | 43,047 psi | 90% | 2835 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 41,060 psi | 86% | 2785 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 90% | 43,062 psi | 90% | 2844 fps | 99% |
| Vihtavuori N540 | <<locked>> | 84% | 42,206 psi | 88% | 2825 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 41,220 psi | 86% | 2818 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,713 psi | 87% | 2851 fps | 97.7% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 39,189 psi | 82% | 2759 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,941 psi | 77% | 2740 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 82% | 37,492 psi | 78% | 2720 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 39,900 psi | 83% | 2897 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,027 psi | 73% | 2700 fps | 96.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,434 psi | 78% | 2756 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 86% | 36,651 psi | 77% | 2822 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,335 psi | 84% | 2825 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 34,780 psi | 73% | 2703 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 35,897 psi | 75% | 2736 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,695 psi | 79% | 2805 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,498 psi | 55% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,987 psi | 84% | 2792 fps | 97.2% |
| IMR 4064 | <<locked>> | 80% | 37,086 psi | 77% | 2703 fps | 95.2% |
| IMR 4831 | <<locked>> | 94% | 39,900 psi | 83% | 2851 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 38,218 psi | 80% | 2792 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 80% | 40,509 psi | 85% | 2818 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 37,231 psi | 78% | 2720 fps | 97.3% |
| Norma 203B | <<locked>> | 80% | 36,854 psi | 77% | 2746 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 36,129 psi | 75% | 2749 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,658 psi | 56% | 1722 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,537 psi | 81% | 2854 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 32,198 psi | 67% | 2710 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 80% | 39,378 psi | 82% | 2746 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 80% | 32,822 psi | 69% | 2644 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,509 psi | 85% | 2818 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 37,231 psi | 78% | 2720 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 35,433 psi | 74% | 2736 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,001 psi | 84% | 2795 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,027 psi | 73% | 2608 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 33,750 psi | 71% | 2654 fps | 95.2% |
| Somchem S365 | <<locked>> | 88% | 31,372 psi | 66% | 2680 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 38,029 psi | 79% | 2736 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,696 psi | 81% | 2733 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 31,923 psi | 67% | 2589 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 80% | 37,362 psi | 78% | 2720 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 34,316 psi | 72% | 2651 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,291 psi | 82% | 2799 fps | 97.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 67 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 120gr | Barnes X BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,883 fps to 2,959 fps. Accurate 3100 gives the best case fill at 100 %, and 67 of the 67 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.284" calls for a 1:11.5 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. As outliers, Accurate 2700, Accurate 3100, Alliant Reloder-26 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.