Load Specifications
Load data in caliber 7 mm Mag. Fl. H&H with .284 | 150gr | Lapua ScenarL bullet and 49 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, ReloadSwiss RS 70 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% | 42,177 psi | 88% | 2530 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 42,337 psi | 88% | 2572 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 40,698 psi | 85% | 2615 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 84% | 41,481 psi | 87% | 2539 fps | 98.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,684 psi | 87% | 2671 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 40,944 psi | 86% | 2562 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 82% | 41,321 psi | 86% | 2572 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 94% | 43,207 psi | 90% | 2680 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 40,596 psi | 85% | 2657 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,927 psi | 77% | 2579 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,988 psi | 86% | 2726 fps | 97.5% |
| Bofors RP3 | <<locked>> | 84% | 40,640 psi | 85% | 2569 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 84% | 41,814 psi | 87% | 2575 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 42,540 psi | 89% | 2621 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 42,119 psi | 88% | 2625 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,201 psi | 74% | 1667 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 41,046 psi | 86% | 2526 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 41,887 psi | 88% | 2621 fps | 98.2% |
| IMR 4895 | <<locked>> | 82% | 42,293 psi | 88% | 2605 fps | 99.1% |
| Lovex S062 | <<locked>> | 82% | 40,654 psi | 85% | 2526 fps | 99.5% |
| Lovex S065 | <<locked>> | 90% | 42,685 psi | 89% | 2566 fps | 96.8% |
| Lovex S070 | <<locked>> | 92% | 42,989 psi | 90% | 2592 fps | 95.8% |
| Norma 203B | <<locked>> | 82% | 40,669 psi | 85% | 2562 fps | 98.8% |
| Norma URP | <<locked>> | 92% | 40,770 psi | 85% | 2612 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 84% | 42,975 psi | 90% | 2628 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 94% | 42,801 psi | 89% | 2657 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,882 psi | 75% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,148 psi | 88% | 2556 fps | 95.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 43,265 psi | 90% | 2717 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 40,654 psi | 85% | 2641 fps | 97.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,785 psi | 85% | 2648 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 82% | 42,714 psi | 89% | 2543 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 86% | 40,799 psi | 85% | 2566 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,685 psi | 89% | 2566 fps | 96.8% |
| Shooters World Precision | <<locked>> | 82% | 40,654 psi | 85% | 2526 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 92% | 42,989 psi | 90% | 2592 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 42,003 psi | 88% | 2618 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 41,031 psi | 86% | 2457 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 41,510 psi | 87% | 2566 fps | 99.2% |
| Somchem S365 | <<locked>> | 96% | 41,553 psi | 87% | 2671 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 82% | 42,177 psi | 88% | 2523 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,830 psi | 89% | 2533 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,221 psi | 88% | 2549 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 92% | 42,772 psi | 89% | 2612 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 82% | 41,249 psi | 86% | 2526 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 42,163 psi | 88% | 2618 fps | 97.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,885 psi | 83% | 2651 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 43,076 psi | 90% | 2595 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,170 psi | 69% | 2575 fps | 98.1% |
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% | 39,407 psi | 82% | 2484 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,217 psi | 78% | 2477 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,083 psi | 69% | 2454 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 36,564 psi | 76% | 2441 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,059 psi | 82% | 2615 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,042 psi | 75% | 2464 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,682 psi | 81% | 2520 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 33,953 psi | 71% | 2470 fps | 95.8% |
| Alliant Reloder-17 | 40.4 gr | 80% | 31,024 psi | 65% | 2425 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,138 psi | 61% | 2375 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 35,650 psi | 74% | 2602 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 35,708 psi | 75% | 2467 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 80% | 36,550 psi | 76% | 2467 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,196 psi | 61% | 2323 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,363 psi | 82% | 2569 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 55% | 1490 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,377 psi | 80% | 2470 fps | 97.9% |
| IMR 4831 | <<locked>> | 86% | 32,343 psi | 68% | 2418 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 39,595 psi | 83% | 2549 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 38,319 psi | 80% | 2480 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 37,739 psi | 79% | 2467 fps | 95.4% |
| Lovex S070 | <<locked>> | 90% | 40,524 psi | 85% | 2543 fps | 95% |
| Norma 203B | <<locked>> | 80% | 38,043 psi | 79% | 2510 fps | 98.3% |
| Norma URP | <<locked>> | 86% | 33,779 psi | 71% | 2461 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 37,666 psi | 79% | 2526 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 40,132 psi | 84% | 2602 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,484 psi | 55% | 1522 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 39,479 psi | 82% | 2503 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,025 psi | 69% | 2490 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 33,011 psi | 69% | 2470 fps | 95% |
| ReloadSwiss RS 70 | 45.2 gr | 88% | 35,868 psi | 75% | 2533 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 40,248 psi | 84% | 2497 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 33,446 psi | 70% | 2411 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,739 psi | 79% | 2467 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 38,319 psi | 80% | 2480 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 40,524 psi | 85% | 2543 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,432 psi | 72% | 2457 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,289 psi | 76% | 2369 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 34,447 psi | 72% | 2418 fps | 97.8% |
| Somchem S365 | 38.3 gr | 80% | 24,889 psi | 52% | 2251 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 39,610 psi | 83% | 2480 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,045 psi | 84% | 2484 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,648 psi | 68% | 2356 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 33,141 psi | 69% | 2408 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 38,624 psi | 81% | 2477 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 34,577 psi | 72% | 2461 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 31,009 psi | 65% | 2448 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,138 psi | 61% | 2283 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,196 psi | 61% | 2448 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 49 powders for 7 mm Mag. Fl. H&H loaded with the .284 | 150gr | Lapua ScenarL. Alliant Reloder-26 delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,726 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:10.0 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. Somchem S365, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for 7 mm Mag. Fl. H&H with the .284 | 150gr | Lapua ScenarL 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.