Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 130gr | Barnes X BT bullet and 41 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, Somchem S365 and Alliant Reloder-17.
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% | 43,294 psi | 90% | 2720 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 43,308 psi | 90% | 2759 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 40,872 psi | 85% | 2782 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 41,365 psi | 86% | 2703 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,452 psi | 87% | 2831 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 40,988 psi | 86% | 2730 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 82% | 41,408 psi | 87% | 2743 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,931 psi | 90% | 2838 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 90% | 42,989 psi | 90% | 2871 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,188 psi | 78% | 2733 fps | 96.9% |
| Bofors RP3 | <<locked>> | 84% | 41,162 psi | 86% | 2746 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 41,814 psi | 87% | 2736 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 42,018 psi | 88% | 2776 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 41,626 psi | 87% | 2785 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,491 psi | 74% | 1801 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 40,872 psi | 85% | 2687 fps | 97.2% |
| IMR 4831 | <<locked>> | 94% | 41,713 psi | 87% | 2782 fps | 96.7% |
| IMR 4895 | <<locked>> | 82% | 42,351 psi | 88% | 2772 fps | 98% |
| Lovex S062 | <<locked>> | 82% | 41,147 psi | 86% | 2697 fps | 98.8% |
| Norma 203B | <<locked>> | 82% | 40,785 psi | 85% | 2730 fps | 97.7% |
| Norma URP | <<locked>> | 94% | 43,236 psi | 90% | 2828 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 84% | 42,569 psi | 89% | 2792 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,911 psi | 75% | 1844 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 42,786 psi | 89% | 2841 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 42,728 psi | 89% | 2881 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 42,888 psi | 90% | 2848 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 82% | 43,134 psi | 90% | 2717 fps | 99% |
| Rottweil R 903 | <<locked>> | 86% | 41,031 psi | 86% | 2733 fps | 98.3% |
| Shooters World Precision | <<locked>> | 82% | 41,147 psi | 86% | 2697 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 41,698 psi | 87% | 2782 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 40,872 psi | 85% | 2625 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 41,916 psi | 88% | 2740 fps | 98.3% |
| Somchem S365 | <<locked>> | 96% | 41,292 psi | 86% | 2835 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 82% | 42,206 psi | 88% | 2703 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,786 psi | 89% | 2707 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,264 psi | 88% | 2717 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 92% | 42,540 psi | 89% | 2772 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 82% | 41,263 psi | 86% | 2697 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 92% | 41,959 psi | 88% | 2779 fps | 96.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,885 psi | 83% | 2815 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 42,873 psi | 90% | 2753 fps | 98.6% |
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% | 40,712 psi | 85% | 2671 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 38,363 psi | 80% | 2661 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 38,334 psi | 80% | 2730 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 36,637 psi | 77% | 2595 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,812 psi | 81% | 2766 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,289 psi | 76% | 2625 fps | 97.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,986 psi | 81% | 2687 fps | 96.6% |
| Alliant Reloder-16 | 43.7 gr | 90% | 38,174 psi | 80% | 2726 fps | 95.5% |
| Alliant Reloder-17 | 42.9 gr | 82% | 33,605 psi | 70% | 2638 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 33,170 psi | 69% | 2625 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 36,172 psi | 76% | 2635 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 82% | 39,334 psi | 82% | 2684 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 33,446 psi | 70% | 2575 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,189 psi | 82% | 2733 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,484 psi | 55% | 1608 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,450 psi | 80% | 2631 fps | 96.5% |
| IMR 4831 | <<locked>> | 90% | 36,898 psi | 77% | 2677 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,871 psi | 83% | 2720 fps | 97.5% |
| Lovex S062 | <<locked>> | 80% | 38,740 psi | 81% | 2648 fps | 98.3% |
| Norma 203B | <<locked>> | 80% | 38,392 psi | 80% | 2677 fps | 97% |
| Norma URP | <<locked>> | 90% | 38,348 psi | 80% | 2723 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 37,579 psi | 79% | 2680 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,934 psi | 56% | 1650 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,176 psi | 84% | 2782 fps | 96.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,576 psi | 70% | 2651 fps | 98.2% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 40,364 psi | 84% | 2795 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 40,857 psi | 85% | 2667 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 34,316 psi | 72% | 2582 fps | 96.5% |
| Shooters World Precision | <<locked>> | 80% | 38,740 psi | 81% | 2648 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,722 psi | 73% | 2615 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,318 psi | 76% | 2530 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 34,983 psi | 73% | 2582 fps | 96.5% |
| Somchem S365 | 41.7 gr | 84% | 29,109 psi | 61% | 2513 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 39,624 psi | 83% | 2654 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,263 psi | 84% | 2657 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 33,286 psi | 70% | 2520 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 88% | 37,666 psi | 79% | 2667 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 38,914 psi | 81% | 2648 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 39,494 psi | 83% | 2726 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 96% | 35,331 psi | 74% | 2707 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 33,547 psi | 70% | 2536 fps | 95.8% |
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 41 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 130gr | Barnes X BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,881 fps; across all powders the maximum-charge window runs from 1,801 fps to 2,881 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 41 of the 41 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Hodgdon TrailBoss, ReloadSwiss RS 14 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-16, Somchem S365, Alliant Reloder-17 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 130gr | Barnes X BT 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.