Load Specifications
Load data in caliber 7.62 x 39 (M43) Russian with .312 | 174gr | Hornady RN Interlocks bullet and 25 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma 200, 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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 90% | 46,557 psi | 90% | 1998 fps | 99.2% |
| Accurate 2015ᴾ | <<locked>> | 100% | 38,276 psi | 74% | 1962 fps | 97% |
| Accurate LT-30 | <<locked>> | 94% | 44,222 psi | 86% | 1955 fps | 96.7% |
| ADI AR 2207 | <<locked>> | 94% | 45,223 psi | 88% | 2044 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 46,557 psi | 90% | 2090 fps | 96.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 35,955 psi | 70% | 1978 fps | 98.6% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 44,353 psi | 86% | 2060 fps | 99.2% |
| Alliant Reloder-7 | <<locked>> | 92% | 44,875 psi | 87% | 2011 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 45,063 psi | 88% | 1988 fps | 97.1% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 44,860 psi | 87% | 2067 fps | 96.6% |
| Hodgdon H4198 | <<locked>> | 92% | 46,137 psi | 90% | 1991 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,168 psi | 59% | 1224 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 45,223 psi | 88% | 2024 fps | 99.6% |
| IMR 4227 | <<locked>> | 86% | 44,106 psi | 86% | 1959 fps | 100% |
| Lovex S053 | <<locked>> | 88% | 44,947 psi | 87% | 1955 fps | 100% |
| Norma 200 | <<locked>> | 96% | 44,643 psi | 87% | 2054 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,921 psi | 58% | 1257 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 45,890 psi | 89% | 2014 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 43,990 psi | 85% | 1834 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 46,369 psi | 90% | 2090 fps | 95.8% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 46,224 psi | 90% | 2064 fps | 97.9% |
| Vihtavuori N110 | <<locked>> | 82% | 44,918 psi | 87% | 1896 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 45,455 psi | 88% | 2011 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 43,381 psi | 84% | 1995 fps | 98.7% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 37,652 psi | 73% | 1913 fps | 96.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 33,620 psi | 65% | 1814 fps | 96.7% |
| Accurate 2015 | <<locked>> | 94% | 31,734 psi | 62% | 1854 fps | 95% |
| Accurate LT-30 | <<locked>> | 90% | 39,204 psi | 76% | 1886 fps | 95.4% |
| ADI AR 2207 | 19.4 gr | 80% | 29,327 psi | 57% | 1804 fps | 99% |
| ADI AR 2219 | <<locked>> | 94% | 40,727 psi | 79% | 2008 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 92% | 28,326 psi | 55% | 1827 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 86% | 28,964 psi | 56% | 1811 fps | 95.3% |
| Alliant Reloder-7 | 20 gr | 80% | 30,777 psi | 60% | 1791 fps | 96.5% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 37,144 psi | 72% | 1880 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 96% | 39,247 psi | 76% | 1985 fps | 95% |
| Hodgdon H4198 | <<locked>> | 88% | 40,886 psi | 79% | 1919 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,292 psi | 43% | 1096 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 27,253 psi | 53% | 1719 fps | 95.2% |
| IMR 4227 | <<locked>> | 80% | 36,970 psi | 72% | 1857 fps | 99.4% |
| Lovex S053 | <<locked>> | 80% | 36,042 psi | 70% | 1837 fps | 100% |
| Norma 200 | 20.3 gr | 80% | 27,354 psi | 53% | 1768 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,843 psi | 42% | 1119 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 35,926 psi | 70% | 1877 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 33,866 psi | 66% | 1709 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 43,685 psi | 85% | 2054 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 36,216 psi | 70% | 1916 fps | 95.3% |
| Vihtavuori N110 | <<locked>> | 80% | 42,105 psi | 82% | 1864 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 29,617 psi | 58% | 1785 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 88% | 30,443 psi | 59% | 1791 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 96% | 33,460 psi | 65% | 1844 fps | 95% |
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 25 powders for 7.62 x 39 (M43) Russian loaded with the .312 | 174gr | Hornady RN Interlocks. ADI AR 2219 delivers the highest muzzle velocity at 2,090 fps; across all powders the maximum-charge window runs from 1,224 fps to 2,090 fps. Accurate 2015 gives the best case fill at 100 %, and 25 of the 25 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (355 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 174.0 gr projectile in 0.312" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Alliant AR-Comp, Alliant Reloder-10x 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. Norma 200, ADI AR 2207, Alliant Reloder-7 rank at the top here: for 7.62 x 39 (M43) Russian with the .312 | 174gr | Hornady RN Interlocks 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.