Load Specifications
Load data in caliber 7.62 x 39 (.308) Russian with .308 | 170gr | Geco PLUS bullet and 21 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Norma 200 and Vihtavuori N120.
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>> | 90% | 44,788 psi | 87% | 1896 fps | 97.8% |
| ADI AR 2205 | <<locked>> | 82% | 45,876 psi | 89% | 1834 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 45,759 psi | 89% | 1972 fps | 100% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 34,171 psi | 66% | 1850 fps | 96.1% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 42,308 psi | 82% | 1949 fps | 97.6% |
| Alliant Reloder-7 | <<locked>> | 94% | 45,542 psi | 88% | 1939 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,805 psi | 58% | 1178 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 46,021 psi | 89% | 1952 fps | 98.9% |
| IMR 4227 | <<locked>> | 88% | 45,034 psi | 87% | 1893 fps | 99.6% |
| Lovex D060 | <<locked>> | 82% | 46,267 psi | 90% | 1923 fps | 98.8% |
| Lovex S053 | <<locked>> | 90% | 46,412 psi | 90% | 1903 fps | 100% |
| Norma 200 | <<locked>> | 98% | 45,397 psi | 88% | 1978 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,559 psi | 57% | 1211 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 44,179 psi | 86% | 1916 fps | 99.4% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 46,267 psi | 90% | 1923 fps | 98.8% |
| Shooters World SOCOM | <<locked>> | 82% | 46,209 psi | 90% | 1903 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 45,179 psi | 88% | 1788 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 44,338 psi | 86% | 1952 fps | 95.8% |
| Vihtavuori N110 | <<locked>> | 84% | 45,948 psi | 89% | 1844 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 46,035 psi | 89% | 1946 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 41,553 psi | 81% | 1886 fps | 97% |
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>> | 82% | 34,838 psi | 68% | 1752 fps | 95.2% |
| ADI AR 2205 | <<locked>> | 80% | 43,047 psi | 84% | 1801 fps | 100% |
| ADI AR 2207 | 18.5 gr | 80% | 28,065 psi | 55% | 1699 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 98% | 32,460 psi | 63% | 1818 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 92% | 33,518 psi | 65% | 1811 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 84% | 33,620 psi | 65% | 1765 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,089 psi | 43% | 1056 fps | 100% |
| IMR 4198 | <<locked>> | 88% | 32,822 psi | 64% | 1752 fps | 95.6% |
| IMR 4227 | <<locked>> | 80% | 35,476 psi | 69% | 1759 fps | 98.1% |
| Lovex D060 | <<locked>> | 80% | 43,410 psi | 84% | 1883 fps | 98.3% |
| Lovex S053 | <<locked>> | 80% | 34,925 psi | 68% | 1749 fps | 99.8% |
| Norma 200 | 20.8 gr | 86% | 31,314 psi | 61% | 1765 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,625 psi | 42% | 1079 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 34,606 psi | 67% | 1775 fps | 97.7% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 43,410 psi | 84% | 1883 fps | 98.3% |
| Shooters World SOCOM | <<locked>> | 80% | 43,395 psi | 84% | 1867 fps | 98.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 32,590 psi | 63% | 1631 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 41,553 psi | 81% | 1913 fps | 95% |
| Vihtavuori N110 | <<locked>> | 80% | 41,191 psi | 80% | 1788 fps | 100% |
| Vihtavuori N120 | 18.5 gr | 80% | 28,340 psi | 55% | 1683 fps | 98.3% |
| Vihtavuori N130 | <<locked>> | 94% | 34,737 psi | 67% | 1785 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 35 powders for 7.62 x 39 (.308) Russian loaded with the .308 | 170gr | Geco PLUS. Norma 200 delivers the highest muzzle velocity at 1,978 fps; across all powders the maximum-charge window runs from 1,178 fps to 1,978 fps. Accurate 2015 gives the best case fill at 100 %, and 35 of the 35 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.308" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Alliant AR-Comp 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. ADI AR 2207, Norma 200, Vihtavuori N120 rank at the top here: for 7.62 x 39 (.308) Russian with the .308 | 170gr | Geco PLUS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2015, Accurate 2460, Accurate LT-32 burn incompletely and react more sensitively to barrel length and temperature. 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.