Load Specifications
Load data in caliber 7.62 x 39 (.308) Russian with .308 | 125gr | Barnes X S bullet and 14 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, ADI AR 2207 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>> | 82% | 45,542 psi | 88% | 2208 fps | 98.7% |
| ADI AR 2205 | <<locked>> | 84% | 44,904 psi | 87% | 2136 fps | 99.6% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 45,556 psi | 88% | 2300 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,472 psi | 57% | 1398 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 45,745 psi | 89% | 2215 fps | 97.5% |
| Lovex D063 | <<locked>> | 82% | 46,470 psi | 90% | 2228 fps | 96.1% |
| Lovex S053 | <<locked>> | 94% | 46,470 psi | 90% | 2231 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,167 psi | 57% | 1430 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 44,483 psi | 86% | 2231 fps | 97.1% |
| Shooters World Blackout | <<locked>> | 82% | 46,470 psi | 90% | 2228 fps | 96.1% |
| Shooters World SOCOM | <<locked>> | 84% | 44,353 psi | 86% | 2182 fps | 96.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 45,571 psi | 89% | 2119 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 44,237 psi | 86% | 2156 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 45,774 psi | 89% | 2274 fps | 99.4% |
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% | 42,931 psi | 83% | 2169 fps | 98.3% |
| ADI AR 2205 | <<locked>> | 80% | 39,726 psi | 77% | 2054 fps | 99% |
| ADI AR 2207 | 21.8 gr | 88% | 32,401 psi | 63% | 2064 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,770 psi | 42% | 1247 fps | 100% |
| IMR 4227 | 20.4 gr | 84% | 36,666 psi | 71% | 2064 fps | 95.1% |
| Lovex D063 | <<locked>> | 80% | 43,381 psi | 84% | 2178 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 32,024 psi | 62% | 1982 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,712 psi | 42% | 1283 fps | 100% |
| ReloadSwiss RS 36 | 22.2 gr | 86% | 37,565 psi | 73% | 2116 fps | 95.2% |
| Shooters World Blackout | <<locked>> | 80% | 43,381 psi | 84% | 2178 fps | 95.3% |
| Shooters World SOCOM | <<locked>> | 82% | 41,887 psi | 81% | 2142 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,501 psi | 59% | 1886 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 37,376 psi | 73% | 2054 fps | 100% |
| Vihtavuori N120 | <<locked>> | 84% | 29,327 psi | 57% | 1972 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 14 powders for 7.62 x 39 (.308) Russian loaded with the .308 | 125gr | Barnes X S. ADI AR 2207 delivers the highest muzzle velocity at 2,300 fps; across all powders the maximum-charge window runs from 1,398 fps to 2,300 fps. ADI AR 2207 gives the best case fill at 100 %, and 14 of the 14 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 125.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Hodgdon TrailBoss, ReloadSwiss RS 14 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, ADI AR 2207, IMR 4227 rank at the top here: for 7.62 x 39 (.308) Russian with the .308 | 125gr | Barnes X S 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.