Load Specifications
Load data in caliber 7.62 x 39 (.308) Russian with .308 | 185gr | Lapua Mega bullet and 22 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma 200, Alliant Reloder-7 and ADI AR 2207.
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: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 88% | 44,309 psi | 86% | 1808 fps | 98.4% |
| Accurate 2015ᴾ | <<locked>> | 100% | 38,682 psi | 75% | 1801 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 94% | 45,136 psi | 88% | 1804 fps | 96.2% |
| ADI AR 2207 | <<locked>> | 94% | 45,455 psi | 88% | 1877 fps | 100% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 36,303 psi | 71% | 1814 fps | 98% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 45,165 psi | 88% | 1900 fps | 98.8% |
| Alliant Reloder-7 | <<locked>> | 92% | 45,208 psi | 88% | 1847 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 45,455 psi | 88% | 1831 fps | 96.5% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 45,556 psi | 88% | 1903 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,530 psi | 59% | 1129 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 45,397 psi | 88% | 1860 fps | 99.4% |
| IMR 4227 | <<locked>> | 86% | 44,541 psi | 87% | 1801 fps | 99.8% |
| Lovex S053 | <<locked>> | 88% | 46,021 psi | 89% | 1808 fps | 100% |
| Norma 200 | <<locked>> | 96% | 45,469 psi | 88% | 1890 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,863 psi | 58% | 1152 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 46,398 psi | 90% | 1854 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 44,527 psi | 86% | 1693 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 44,048 psi | 86% | 1867 fps | 96.7% |
| Vihtavuori N110 | <<locked>> | 82% | 45,745 psi | 89% | 1749 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 45,629 psi | 89% | 1850 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 44,121 psi | 86% | 1837 fps | 98.3% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 38,305 psi | 74% | 1762 fps | 95.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 34,258 psi | 67% | 1667 fps | 96.1% |
| Accurate 2015 | <<locked>> | 98% | 36,608 psi | 71% | 1772 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 92% | 42,279 psi | 82% | 1768 fps | 95.5% |
| ADI AR 2207 | 18.2 gr | 80% | 29,863 psi | 58% | 1654 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 94% | 30,342 psi | 59% | 1706 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 88% | 31,589 psi | 61% | 1699 fps | 95.4% |
| Alliant Reloder-7 | 18.8 gr | 80% | 31,459 psi | 61% | 1647 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 40,248 psi | 78% | 1765 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 98% | 42,699 psi | 83% | 1867 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,118 psi | 43% | 1004 fps | 100% |
| IMR 4198 | <<locked>> | 82% | 29,312 psi | 57% | 1611 fps | 95.3% |
| IMR 4227 | <<locked>> | 80% | 37,362 psi | 73% | 1706 fps | 99.1% |
| Lovex S053 | <<locked>> | 80% | 36,318 psi | 71% | 1686 fps | 100% |
| Norma 200 | 19.5 gr | 82% | 29,602 psi | 57% | 1654 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,176 psi | 43% | 1033 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 36,289 psi | 70% | 1722 fps | 98.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 34,127 psi | 66% | 1572 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 39,160 psi | 76% | 1798 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 42,685 psi | 83% | 1716 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 30,139 psi | 59% | 1637 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 90% | 32,750 psi | 64% | 1677 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 98% | 35,969 psi | 70% | 1726 fps | 95% |
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 22 powders for 7.62 x 39 (.308) Russian loaded with the .308 | 185gr | Lapua Mega. Hodgdon H322 delivers the highest muzzle velocity at 1,903 fps; across all powders the maximum-charge window runs from 1,129 fps to 1,903 fps. Accurate 2015 gives the best case fill at 100 %, and 22 of the 22 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.308" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Alliant AR-Comp, Alliant Reloder-10x 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. Norma 200, Alliant Reloder-7, ADI AR 2207 rank at the top here: for 7.62 x 39 (.308) Russian with the .308 | 185gr | Lapua Mega they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.