Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 140gr | Sierra GameKing bullet and 50 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% | 42,975 psi | 90% | 2641 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,946 psi | 90% | 2677 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 41,336 psi | 86% | 2717 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 86% | 42,395 psi | 89% | 2648 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,641 psi | 89% | 2782 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 41,698 psi | 87% | 2667 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,409 psi | 89% | 2687 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,350 psi | 86% | 2730 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 90% | 41,365 psi | 86% | 2759 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,331 psi | 74% | 2621 fps | 97.2% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 43,062 psi | 90% | 2697 fps | 97.8% |
| Bofors RP3 | <<locked>> | 86% | 41,495 psi | 87% | 2677 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 86% | 42,511 psi | 89% | 2680 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 43,004 psi | 90% | 2720 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,975 psi | 90% | 2733 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 73% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,554 psi | 89% | 2657 fps | 98.9% |
| IMR 4064 | <<locked>> | 84% | 41,989 psi | 88% | 2635 fps | 98.1% |
| IMR 4831 | <<locked>> | 96% | 42,540 psi | 89% | 2723 fps | 97.7% |
| IMR 4895 | <<locked>> | 82% | 40,640 psi | 85% | 2664 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 82% | 42,917 psi | 90% | 2677 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 41,510 psi | 87% | 2631 fps | 99.3% |
| Norma 201 | <<locked>> | 82% | 43,163 psi | 90% | 2651 fps | 99.5% |
| Norma 202 | <<locked>> | 82% | 43,308 psi | 90% | 2661 fps | 100% |
| Norma 203B | <<locked>> | 84% | 41,713 psi | 87% | 2674 fps | 98.5% |
| Norma URP | <<locked>> | 94% | 41,466 psi | 87% | 2717 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 84% | 41,089 psi | 86% | 2684 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 74% | 1772 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,365 psi | 86% | 2733 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,292 psi | 86% | 2772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 41,118 psi | 86% | 2736 fps | 97% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,727 psi | 87% | 2749 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 82% | 40,944 psi | 86% | 2602 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 88% | 41,423 psi | 87% | 2667 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,917 psi | 90% | 2677 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 41,510 psi | 87% | 2631 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,801 psi | 89% | 2726 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,583 psi | 89% | 2667 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 41,785 psi | 87% | 2562 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 42,482 psi | 89% | 2677 fps | 99% |
| Somchem S365 | <<locked>> | 98% | 42,163 psi | 88% | 2776 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 84% | 42,815 psi | 89% | 2631 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 40,944 psi | 86% | 2592 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 43,250 psi | 90% | 2661 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 92% | 41,031 psi | 86% | 2667 fps | 97% |
| Vihtavuori N540 | <<locked>> | 84% | 42,018 psi | 88% | 2631 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,801 psi | 89% | 2720 fps | 97.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,855 psi | 79% | 2697 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 41,394 psi | 86% | 2651 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,989 psi | 88% | 2671 fps | 98.9% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 37,695 psi | 79% | 2546 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,621 psi | 74% | 2536 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 36,114 psi | 75% | 2612 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 35,317 psi | 74% | 2497 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,449 psi | 78% | 2661 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,635 psi | 72% | 2516 fps | 97.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,173 psi | 78% | 2575 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,563 psi | 72% | 2569 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 82% | 31,763 psi | 66% | 2526 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,343 psi | 65% | 2513 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,408 psi | 84% | 2644 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 33,881 psi | 71% | 2513 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 82% | 37,507 psi | 78% | 2575 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,704 psi | 62% | 2411 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,434 psi | 78% | 2621 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,136 psi | 55% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,118 psi | 84% | 2612 fps | 98.5% |
| IMR 4064 | <<locked>> | 80% | 37,043 psi | 77% | 2530 fps | 96.9% |
| IMR 4831 | <<locked>> | 90% | 34,983 psi | 73% | 2566 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 38,029 psi | 79% | 2608 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 80% | 40,089 psi | 84% | 2625 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 36,622 psi | 77% | 2533 fps | 98.5% |
| Norma 201 | <<locked>> | 80% | 40,669 psi | 85% | 2602 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 40,785 psi | 85% | 2612 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,535 psi | 76% | 2566 fps | 97.3% |
| Norma URP | <<locked>> | 90% | 36,579 psi | 76% | 2612 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 36,071 psi | 75% | 2575 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,281 psi | 55% | 1581 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,595 psi | 81% | 2674 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,720 psi | 66% | 2536 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,013 psi | 75% | 2625 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,146 psi | 82% | 2690 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 38,595 psi | 81% | 2552 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 32,010 psi | 67% | 2461 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,089 psi | 84% | 2625 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 36,622 psi | 77% | 2533 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,040 psi | 69% | 2510 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,929 psi | 83% | 2615 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,809 psi | 73% | 2428 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 33,069 psi | 69% | 2470 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 26,963 psi | 56% | 2392 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 37,840 psi | 79% | 2543 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,566 psi | 81% | 2546 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,314 psi | 65% | 2408 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 35,940 psi | 75% | 2559 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 37,173 psi | 78% | 2536 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,172 psi | 73% | 2559 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 33,301 psi | 70% | 2589 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,776 psi | 62% | 2375 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,088 psi | 82% | 2615 fps | 98.4% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 77 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 140gr | Sierra GameKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,782 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,782 fps. Accurate 3100 gives the best case fill at 100 %, and 77 of the 77 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 140.0 gr projectile in 0.284" calls for a 1:10.0 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, ADI AR 2209 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.