Load Specifications
Load data in caliber 7.62 x 39 (.308) Russian with .308 | 153gr | TWENTY-NINE SILENTIO bullet and 18 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 5744 | <<locked>> | 82% | 46,311 psi | 90% | 1965 fps | 96.8% |
| Accurate No. 11 FS | <<locked>> | 84% | 44,440 psi | 86% | 1929 fps | 99.1% |
| ADI AR 2205 | <<locked>> | 86% | 44,280 psi | 86% | 1867 fps | 99.9% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 40,828 psi | 79% | 1969 fps | 98.6% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 43,859 psi | 85% | 1962 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,181 psi | 55% | 1191 fps | 100% |
| IMR 4227 | <<locked>> | 94% | 44,889 psi | 87% | 1939 fps | 98.1% |
| Lovex D060 | <<locked>> | 86% | 43,816 psi | 85% | 1929 fps | 96.3% |
| Lovex D063 | <<locked>> | 84% | 45,527 psi | 88% | 1946 fps | 96.8% |
| Lovex S053 | <<locked>> | 96% | 45,136 psi | 88% | 1949 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,296 psi | 53% | 1214 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 45,818 psi | 89% | 1988 fps | 98.2% |
| Shooters World Blackout | <<locked>> | 84% | 45,527 psi | 88% | 1946 fps | 96.8% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 43,816 psi | 85% | 1929 fps | 96.3% |
| Shooters World SOCOM | <<locked>> | 86% | 43,816 psi | 85% | 1913 fps | 97% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 46,209 psi | 90% | 1867 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 45,150 psi | 88% | 1903 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 41,292 psi | 80% | 1946 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 5744 | <<locked>> | 80% | 43,816 psi | 85% | 1929 fps | 96.3% |
| Accurate No. 11 FS | <<locked>> | 80% | 39,015 psi | 76% | 1854 fps | 98.3% |
| ADI AR 2205 | <<locked>> | 80% | 36,825 psi | 72% | 1765 fps | 99.1% |
| ADI AR 2207 | <<locked>> | 90% | 30,560 psi | 59% | 1798 fps | 95.7% |
| Alliant Reloder-7 | <<locked>> | 98% | 41,437 psi | 80% | 1929 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,450 psi | 40% | 1060 fps | 100% |
| IMR 4227 | 16.9 gr | 84% | 33,489 psi | 65% | 1768 fps | 95.1% |
| Lovex D060 | <<locked>> | 82% | 39,146 psi | 76% | 1860 fps | 95% |
| Lovex D063 | <<locked>> | 80% | 39,958 psi | 78% | 1870 fps | 95.4% |
| Lovex S053 | 15.7 gr | 80% | 28,398 psi | 55% | 1686 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,914 psi | 39% | 1083 fps | 100% |
| ReloadSwiss RS 36 | 18.4 gr | 86% | 33,939 psi | 66% | 1811 fps | 95.1% |
| Shooters World Blackout | <<locked>> | 80% | 39,958 psi | 78% | 1870 fps | 95.4% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 39,146 psi | 76% | 1860 fps | 95% |
| Shooters World SOCOM | <<locked>> | 82% | 38,464 psi | 75% | 1837 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,296 psi | 53% | 1608 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 33,663 psi | 65% | 1752 fps | 100% |
| Vihtavuori N120 | <<locked>> | 86% | 27,340 psi | 53% | 1709 fps | 95.6% |
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 18 powders for 7.62 x 39 (.308) Russian loaded with the .308 | 153gr | TWENTY-NINE SILENTIO. ReloadSwiss RS 36 delivers the highest muzzle velocity at 1,988 fps; across all powders the maximum-charge window runs from 1,191 fps to 1,988 fps. ADI AR 2207 gives the best case fill at 100 %, and 18 of the 18 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 153.0 gr projectile in 0.308" calls for a 1:12.0 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 | 153gr | 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.