Load Specifications
Load data in caliber 7.62 x 39 (.308) Russian with .308 | 167gr | TWENTY-NINE SILENTIO bullet and 19 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 1680 | <<locked>> | 96% | 45,397 psi | 88% | 1834 fps | 95.9% |
| Accurate 5744 | <<locked>> | 82% | 46,485 psi | 90% | 1854 fps | 97.4% |
| Accurate No. 11 FS | <<locked>> | 84% | 45,005 psi | 87% | 1824 fps | 99.4% |
| ADI AR 2205 | <<locked>> | 86% | 44,440 psi | 86% | 1759 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 41,466 psi | 81% | 1867 fps | 99% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 44,701 psi | 87% | 1864 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,195 psi | 55% | 1115 fps | 100% |
| IMR 4227 | <<locked>> | 94% | 45,469 psi | 88% | 1837 fps | 98.6% |
| Lovex D060 | <<locked>> | 86% | 44,454 psi | 86% | 1827 fps | 96.9% |
| Lovex D063 | <<locked>> | 84% | 46,238 psi | 90% | 1847 fps | 97.4% |
| Lovex S053 | <<locked>> | 96% | 45,701 psi | 89% | 1844 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,949 psi | 54% | 1145 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 46,398 psi | 90% | 1883 fps | 98.6% |
| Shooters World Blackout | <<locked>> | 84% | 46,238 psi | 90% | 1847 fps | 97.4% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 44,454 psi | 86% | 1827 fps | 96.9% |
| Shooters World SOCOM | <<locked>> | 86% | 43,932 psi | 85% | 1808 fps | 97.5% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 46,369 psi | 90% | 1755 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 45,527 psi | 88% | 1795 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 41,858 psi | 81% | 1844 fps | 99.7% |
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>> | 94% | 42,105 psi | 82% | 1791 fps | 95.1% |
| Accurate 5744 | <<locked>> | 80% | 43,787 psi | 85% | 1821 fps | 96.8% |
| Accurate No. 11 FS | <<locked>> | 80% | 39,827 psi | 77% | 1762 fps | 98.8% |
| ADI AR 2205 | <<locked>> | 80% | 36,970 psi | 72% | 1663 fps | 99.4% |
| ADI AR 2207 | <<locked>> | 88% | 29,022 psi | 56% | 1670 fps | 95.7% |
| Alliant Reloder-7 | <<locked>> | 96% | 39,581 psi | 77% | 1798 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,465 psi | 40% | 991 fps | 100% |
| IMR 4227 | 15.4 gr | 82% | 31,662 psi | 61% | 1637 fps | 95.1% |
| Lovex D060 | <<locked>> | 80% | 37,637 psi | 73% | 1729 fps | 95.1% |
| Lovex D063 | <<locked>> | 80% | 40,263 psi | 78% | 1768 fps | 96% |
| Lovex S053 | 14.7 gr | 80% | 28,761 psi | 56% | 1598 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,972 psi | 39% | 1014 fps | 100% |
| ReloadSwiss RS 36 | 16.8 gr | 84% | 32,155 psi | 62% | 1680 fps | 95.1% |
| Shooters World Blackout | <<locked>> | 80% | 40,263 psi | 78% | 1768 fps | 96% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 37,637 psi | 73% | 1729 fps | 95.1% |
| Shooters World SOCOM | <<locked>> | 80% | 36,042 psi | 70% | 1699 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,702 psi | 54% | 1519 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 34,403 psi | 67% | 1660 fps | 100% |
| Vihtavuori N120 | <<locked>> | 84% | 26,150 psi | 51% | 1591 fps | 95.7% |
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 19 powders for 7.62 x 39 (.308) Russian loaded with the .308 | 167gr | TWENTY-NINE SILENTIO. ReloadSwiss RS 36 delivers the highest muzzle velocity at 1,883 fps; across all powders the maximum-charge window runs from 1,115 fps to 1,883 fps. ADI AR 2207 gives the best case fill at 100 %, and 19 of the 19 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 167.0 gr projectile in 0.308" calls for a 1:11.5 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 | 167gr | TWENTY-NINE SILENTIO 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.