Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 150gr | Nosler SP SolBase bullet and 43 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 3100ᴾ | <<locked>> | 100% | 40,770 psi | 85% | 2615 fps | 96.5% |
| Accurate 4064 | <<locked>> | 82% | 41,843 psi | 87% | 2575 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 43,207 psi | 90% | 2680 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 82% | 40,741 psi | 85% | 2546 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,946 psi | 90% | 2615 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,583 psi | 89% | 2690 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 88% | 42,670 psi | 89% | 2717 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,117 psi | 82% | 2648 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 40,640 psi | 85% | 2743 fps | 97.9% |
| Bofors RP3 | <<locked>> | 84% | 42,960 psi | 90% | 2628 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 40,944 psi | 86% | 2579 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 90% | 43,134 psi | 90% | 2674 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 41,930 psi | 88% | 2628 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,505 psi | 74% | 1690 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,786 psi | 89% | 2579 fps | 99% |
| IMR 4831 | <<locked>> | 92% | 41,408 psi | 87% | 2628 fps | 98.3% |
| Lovex S062 | <<locked>> | 82% | 42,743 psi | 89% | 2582 fps | 99.8% |
| Lovex S065 | <<locked>> | 88% | 42,221 psi | 88% | 2575 fps | 97.1% |
| Lovex S070 | <<locked>> | 90% | 42,467 psi | 89% | 2602 fps | 96% |
| Norma 203B | <<locked>> | 82% | 42,699 psi | 89% | 2618 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 43,076 psi | 90% | 2674 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 82% | 42,337 psi | 88% | 2635 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 92% | 42,322 psi | 88% | 2667 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,911 psi | 75% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,466 psi | 87% | 2562 fps | 96.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 42,395 psi | 89% | 2717 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 43,091 psi | 90% | 2703 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 43,047 psi | 90% | 2717 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 86% | 42,830 psi | 89% | 2618 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 42,221 psi | 88% | 2575 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 42,743 psi | 89% | 2582 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 90% | 42,467 psi | 89% | 2602 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 41,394 psi | 86% | 2621 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,772 psi | 89% | 2500 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 41,060 psi | 86% | 2572 fps | 99.3% |
| Somchem S365 | <<locked>> | 94% | 41,263 psi | 86% | 2680 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 41,597 psi | 87% | 2556 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 90% | 42,264 psi | 88% | 2621 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 82% | 43,120 psi | 90% | 2575 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 41,597 psi | 87% | 2625 fps | 98% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,743 psi | 89% | 2720 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 42,366 psi | 89% | 2602 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,896 psi | 73% | 2651 fps | 99.2% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 38,072 psi | 80% | 2559 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 39,218 psi | 82% | 2526 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 32,866 psi | 69% | 2461 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 38,232 psi | 80% | 2493 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,797 psi | 79% | 2516 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 82% | 31,343 psi | 65% | 2421 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,735 psi | 68% | 2490 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,718 psi | 60% | 2382 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 94% | 35,331 psi | 74% | 2615 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 37,449 psi | 78% | 2520 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 80% | 38,435 psi | 80% | 2526 fps | 97% |
| Hodgdon H414 | <<locked>> | 88% | 40,480 psi | 85% | 2621 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,035 psi | 56% | 2277 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 55% | 1509 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,103 psi | 84% | 2526 fps | 98.5% |
| IMR 4831 | <<locked>> | 84% | 31,923 psi | 67% | 2421 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 40,089 psi | 84% | 2530 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 37,304 psi | 78% | 2477 fps | 95.7% |
| Lovex S070 | <<locked>> | 88% | 39,871 psi | 83% | 2549 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 40,045 psi | 84% | 2566 fps | 98.9% |
| Norma URP | <<locked>> | 84% | 33,228 psi | 69% | 2461 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 39,479 psi | 82% | 2579 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 37,144 psi | 78% | 2556 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,876 psi | 56% | 1549 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,711 psi | 81% | 2507 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,824 psi | 73% | 2556 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,619 psi | 68% | 2474 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 35,056 psi | 73% | 2536 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 35,201 psi | 74% | 2464 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,304 psi | 78% | 2477 fps | 95.7% |
| Shooters World Precision | <<locked>> | 80% | 40,089 psi | 84% | 2530 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 39,871 psi | 83% | 2549 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,201 psi | 76% | 2516 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,797 psi | 79% | 2415 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 36,114 psi | 75% | 2470 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 26,295 psi | 55% | 2313 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 34,243 psi | 72% | 2408 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 32,648 psi | 68% | 2415 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 40,509 psi | 85% | 2526 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 32,068 psi | 67% | 2415 fps | 95% |
| Vihtavuori N555 | <<locked>> | 90% | 30,748 psi | 64% | 2454 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,516 psi | 64% | 2339 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,180 psi | 57% | 2398 fps | 95% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 43 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 150gr | Nosler SP SolBase. Alliant Reloder-26 delivers the highest muzzle velocity at 2,743 fps; across all powders the maximum-charge window runs from 1,690 fps to 2,743 fps. Accurate 3100 gives the best case fill at 100 %, and 43 of the 43 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 150.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.