Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 140gr | Barnes XLC BT bullet and 39 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 62 and Alliant Reloder-16.
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 4064 | <<locked>> | 82% | 42,598 psi | 89% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 42,960 psi | 90% | 2726 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 84% | 42,685 psi | 89% | 2635 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 43,076 psi | 90% | 2769 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,757 psi | 89% | 2667 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 43,178 psi | 90% | 2677 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,090 psi | 88% | 2723 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 41,959 psi | 88% | 2753 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,682 psi | 81% | 2680 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,830 psi | 89% | 2831 fps | 97.2% |
| Bofors RP3 | <<locked>> | 84% | 42,859 psi | 90% | 2677 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 82% | 40,857 psi | 85% | 2621 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 41,220 psi | 86% | 2664 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,708 psi | 75% | 1732 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,438 psi | 89% | 2621 fps | 98.2% |
| IMR 4831 | <<locked>> | 92% | 41,118 psi | 86% | 2674 fps | 97.3% |
| Lovex S062 | <<locked>> | 82% | 42,786 psi | 89% | 2631 fps | 99.4% |
| Lovex S065 | <<locked>> | 88% | 42,177 psi | 88% | 2621 fps | 95.9% |
| Norma 203B | <<locked>> | 82% | 42,496 psi | 89% | 2667 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 42,511 psi | 89% | 2717 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 82% | 41,756 psi | 87% | 2677 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,187 psi | 76% | 1772 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 41,901 psi | 88% | 2762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,163 psi | 88% | 2736 fps | 97.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,308 psi | 88% | 2743 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 86% | 42,975 psi | 90% | 2674 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 42,177 psi | 88% | 2621 fps | 95.9% |
| Shooters World Precision | <<locked>> | 82% | 42,786 psi | 89% | 2631 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 40,843 psi | 85% | 2664 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,424 psi | 89% | 2552 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 41,176 psi | 86% | 2625 fps | 98.7% |
| Somchem S365 | <<locked>> | 96% | 43,294 psi | 90% | 2776 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 86% | 41,553 psi | 87% | 2605 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 90% | 41,742 psi | 87% | 2661 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 82% | 42,801 psi | 89% | 2625 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 41,060 psi | 86% | 2664 fps | 96.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,814 psi | 87% | 2756 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 41,684 psi | 87% | 2638 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,027 psi | 73% | 2677 fps | 97.8% |
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 4064 | <<locked>> | 80% | 40,103 psi | 84% | 2592 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 35,433 psi | 74% | 2566 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 38,014 psi | 79% | 2536 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,248 psi | 84% | 2707 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,043 psi | 79% | 2569 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,611 psi | 85% | 2625 fps | 97.7% |
| Alliant Reloder-16 | 41 gr | 86% | 35,404 psi | 74% | 2566 fps | 95.4% |
| Alliant Reloder-17 | 41.1 gr | 80% | 32,866 psi | 69% | 2530 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,024 psi | 65% | 2480 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,768 psi | 79% | 2710 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 37,797 psi | 79% | 2575 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 80% | 38,392 psi | 80% | 2569 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,966 psi | 65% | 2421 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 56% | 1549 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,914 psi | 83% | 2569 fps | 97.6% |
| IMR 4831 | <<locked>> | 86% | 34,360 psi | 72% | 2523 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 40,205 psi | 84% | 2582 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 39,711 psi | 83% | 2569 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 40,016 psi | 84% | 2615 fps | 98.1% |
| Norma URP | <<locked>> | 86% | 35,578 psi | 74% | 2562 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 39,044 psi | 82% | 2618 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 57% | 1588 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,780 psi | 73% | 2595 fps | 99.2% |
| ReloadSwiss RS 62 | 45.2 gr | 88% | 37,289 psi | 78% | 2631 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,827 psi | 83% | 2687 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 35,853 psi | 75% | 2523 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,711 psi | 83% | 2569 fps | 95.2% |
| Shooters World Precision | <<locked>> | 80% | 40,205 psi | 84% | 2582 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,187 psi | 76% | 2562 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,869 psi | 79% | 2467 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 36,390 psi | 76% | 2523 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 27,093 psi | 57% | 2365 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 34,693 psi | 72% | 2464 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 34,954 psi | 73% | 2510 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 40,234 psi | 84% | 2575 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 36,390 psi | 76% | 2562 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 33,127 psi | 69% | 2559 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,893 psi | 65% | 2382 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 96% | 31,212 psi | 65% | 2556 fps | 95.7% |
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 39 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 140gr | Barnes XLC BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,831 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,831 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 39 of the 39 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:10.5 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. Alliant Reloder-17, ReloadSwiss RS 62, Alliant Reloder-16 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 140gr | Barnes XLC 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.