Load Specifications
Load data in caliber 7.62 x 39 (.308) Russian with .308 | 155gr | Norma GTX 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, ADI AR 2207 and Alliant Reloder-7.
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>> | 92% | 43,787 psi | 85% | 1952 fps | 96.2% |
| Accurate No. 11 FS | <<locked>> | 82% | 45,977 psi | 89% | 1975 fps | 99.7% |
| ADI AR 2205 | <<locked>> | 84% | 45,150 psi | 88% | 1903 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 45,876 psi | 89% | 2060 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 98% | 46,557 psi | 90% | 2031 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,935 psi | 56% | 1220 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 41,727 psi | 81% | 1965 fps | 96.8% |
| IMR 4227 | <<locked>> | 92% | 46,398 psi | 90% | 1988 fps | 99% |
| Lovex D060 | <<locked>> | 84% | 44,918 psi | 87% | 1978 fps | 97.5% |
| Lovex S053 | <<locked>> | 92% | 44,483 psi | 86% | 1965 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 42,873 psi | 83% | 2024 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,601 psi | 56% | 1253 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 45,063 psi | 88% | 2005 fps | 98.8% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 44,918 psi | 87% | 1978 fps | 97.5% |
| Shooters World SOCOM | <<locked>> | 84% | 44,730 psi | 87% | 1959 fps | 98.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 45,759 psi | 89% | 1880 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 44,585 psi | 87% | 1916 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 46,122 psi | 90% | 2034 fps | 100% |
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>> | 90% | 40,509 psi | 79% | 1906 fps | 95.4% |
| Accurate No. 11 FS | <<locked>> | 80% | 43,076 psi | 84% | 1939 fps | 99.5% |
| ADI AR 2205 | <<locked>> | 80% | 39,668 psi | 77% | 1834 fps | 99.8% |
| ADI AR 2207 | 18.5 gr | 82% | 26,731 psi | 52% | 1742 fps | 95.1% |
| Alliant Reloder-7 | 21 gr | 90% | 36,347 psi | 71% | 1880 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,234 psi | 41% | 1093 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 37,652 psi | 73% | 1900 fps | 95.6% |
| IMR 4227 | <<locked>> | 80% | 32,648 psi | 63% | 1781 fps | 96% |
| Lovex D060 | <<locked>> | 80% | 39,972 psi | 78% | 1903 fps | 96.3% |
| Lovex S053 | <<locked>> | 80% | 31,560 psi | 61% | 1768 fps | 98.7% |
| Norma 200 | <<locked>> | 94% | 35,607 psi | 69% | 1916 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,726 psi | 40% | 1112 fps | 100% |
| ReloadSwiss RS 36 | 18.8 gr | 80% | 31,256 psi | 61% | 1788 fps | 95.2% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 39,972 psi | 78% | 1903 fps | 96.3% |
| Shooters World SOCOM | <<locked>> | 80% | 39,247 psi | 76% | 1880 fps | 96.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 29,849 psi | 58% | 1667 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 37,159 psi | 72% | 1821 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 25,425 psi | 49% | 1690 fps | 95.8% |
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 | 155gr | Norma GTX. ADI AR 2207 delivers the highest muzzle velocity at 2,060 fps; across all powders the maximum-charge window runs from 1,220 fps to 2,060 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 56–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Hodgdon TrailBoss, IMR 4198 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, Alliant Reloder-7 rank at the top here: for 7.62 x 39 (.308) Russian with the .308 | 155gr | Norma GTX 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.