Load Specifications
Load data in caliber 7.62 x 39 (.308) Russian with .310 | 123gr | Hornady SST bullet and 14 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Lovex S053, IMR 4227 and Vihtavuori N110.
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% | 44,802 psi | 87% | 2231 fps | 98.5% |
| ADI AR 2205 | <<locked>> | 86% | 44,063 psi | 86% | 2156 fps | 99.5% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 41,321 psi | 80% | 2270 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,268 psi | 55% | 1407 fps | 100% |
| IMR 4227 | <<locked>> | 94% | 45,411 psi | 88% | 2244 fps | 97.3% |
| Lovex D063 | <<locked>> | 84% | 46,238 psi | 90% | 2257 fps | 95.9% |
| Lovex S053 | <<locked>> | 96% | 45,571 psi | 89% | 2257 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,282 psi | 53% | 1434 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 46,195 psi | 90% | 2293 fps | 97.3% |
| Shooters World Blackout | <<locked>> | 84% | 46,238 psi | 90% | 2257 fps | 95.9% |
| Shooters World SOCOM | <<locked>> | 86% | 43,903 psi | 85% | 2208 fps | 95.9% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 46,543 psi | 90% | 2169 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 45,600 psi | 89% | 2215 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 41,669 psi | 81% | 2247 fps | 98.8% |
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 No. 11 FS | <<locked>> | 80% | 39,247 psi | 76% | 2142 fps | 97.4% |
| ADI AR 2205 | <<locked>> | 80% | 36,883 psi | 72% | 2044 fps | 98.5% |
| ADI AR 2207 | <<locked>> | 92% | 32,721 psi | 64% | 2113 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,566 psi | 40% | 1257 fps | 100% |
| IMR 4227 | 21.4 gr | 88% | 37,782 psi | 73% | 2123 fps | 95.3% |
| Lovex D063 | <<locked>> | 82% | 42,975 psi | 83% | 2205 fps | 95% |
| Lovex S053 | 19.1 gr | 80% | 28,863 psi | 56% | 1955 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,957 psi | 39% | 1283 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 38,624 psi | 75% | 2172 fps | 95.4% |
| Shooters World Blackout | <<locked>> | 82% | 42,975 psi | 83% | 2205 fps | 95% |
| Shooters World SOCOM | <<locked>> | 84% | 41,350 psi | 80% | 2165 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,195 psi | 53% | 1864 fps | 100% |
| Vihtavuori N110 | 18.2 gr | 80% | 33,924 psi | 66% | 2037 fps | 100% |
| Vihtavuori N120 | <<locked>> | 88% | 29,486 psi | 57% | 2014 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 .310 | 123gr | Hornady SST. ReloadSwiss RS 36 delivers the highest muzzle velocity at 2,293 fps; across all powders the maximum-charge window runs from 1,407 fps to 2,293 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 53–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.31" calls for a 1:15.5 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. Lovex S053, IMR 4227, Vihtavuori N110 rank at the top here: for 7.62 x 39 (.308) Russian with the .310 | 123gr | Hornady SST 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.