Load Specifications
Load data in caliber 7.62 x 39 (.308) Russian with .308 | 150gr | Hornady ECX bullet and 17 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Lovex S053 and IMR 4227.
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 No. 11 FS | <<locked>> | 84% | 45,237 psi | 88% | 1988 fps | 99.3% |
| ADI AR 2205 | <<locked>> | 86% | 44,164 psi | 86% | 1909 fps | 99.9% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 41,278 psi | 80% | 2021 fps | 98.8% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 44,570 psi | 87% | 2021 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,934 psi | 54% | 1224 fps | 100% |
| IMR 4227 | <<locked>> | 94% | 45,310 psi | 88% | 1991 fps | 98.4% |
| Lovex D060 | <<locked>> | 86% | 44,469 psi | 86% | 1988 fps | 96.7% |
| Lovex D063 | <<locked>> | 84% | 46,427 psi | 90% | 2008 fps | 97.2% |
| Lovex S053 | <<locked>> | 96% | 45,411 psi | 88% | 1998 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 26,963 psi | 52% | 1247 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 46,282 psi | 90% | 2041 fps | 98.4% |
| Shooters World Blackout | <<locked>> | 84% | 46,427 psi | 90% | 2008 fps | 97.2% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 44,469 psi | 86% | 1988 fps | 96.7% |
| Shooters World SOCOM | <<locked>> | 86% | 44,454 psi | 86% | 1969 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 44,280 psi | 86% | 1890 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 45,295 psi | 88% | 1952 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 41,713 psi | 81% | 1998 fps | 99.5% |
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 No. 11 FS | <<locked>> | 80% | 39,378 psi | 76% | 1906 fps | 98.5% |
| ADI AR 2205 | <<locked>> | 80% | 36,869 psi | 72% | 1811 fps | 99.3% |
| ADI AR 2207 | <<locked>> | 88% | 28,485 psi | 55% | 1801 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 96% | 39,349 psi | 76% | 1949 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,044 psi | 39% | 1086 fps | 100% |
| IMR 4227 | 17.8 gr | 84% | 33,504 psi | 65% | 1814 fps | 95.4% |
| Lovex D060 | <<locked>> | 82% | 39,334 psi | 76% | 1909 fps | 95.3% |
| Lovex D063 | <<locked>> | 80% | 40,422 psi | 79% | 1923 fps | 95.8% |
| Lovex S053 | 16.6 gr | 80% | 28,500 psi | 55% | 1732 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,856 psi | 39% | 1119 fps | 100% |
| ReloadSwiss RS 36 | 19.4 gr | 86% | 34,098 psi | 66% | 1860 fps | 95.5% |
| Shooters World Blackout | <<locked>> | 80% | 40,422 psi | 79% | 1923 fps | 95.8% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 39,334 psi | 76% | 1909 fps | 95.3% |
| Shooters World SOCOM | <<locked>> | 80% | 36,114 psi | 70% | 1847 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,253 psi | 53% | 1647 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 34,026 psi | 66% | 1801 fps | 100% |
| Vihtavuori N120 | <<locked>> | 84% | 25,933 psi | 50% | 1722 fps | 95.2% |
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 17 powders for 7.62 x 39 (.308) Russian loaded with the .308 | 150gr | Hornady ECX. ReloadSwiss RS 36 delivers the highest muzzle velocity at 2,041 fps; across all powders the maximum-charge window runs from 1,224 fps to 2,041 fps. ADI AR 2207 gives the best case fill at 100 %, and 17 of the 17 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Alliant Reloder-7, 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. ReloadSwiss RS 36, Lovex S053, IMR 4227 rank at the top here: for 7.62 x 39 (.308) Russian with the .308 | 150gr | Hornady ECX 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.