Load Specifications
Load data in caliber .30 Carbine with .308 | 110gr | Speer TMJ bullet and 4 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon TrailBoss and ReloadSwiss RS 14.
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 |
|---|---|---|---|---|---|---|
| Hodgdon LilGunᴾ | <<locked>> | 100% | 31,009 psi | 67% | 2054 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 16,230 psi | 35% | 1191 fps | 100% |
| Lovex S040ᴾ | <<locked>> | 100% | 38,566 psi | 83% | 2005 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 13,300 psi | 29% | 1184 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Hodgdon LilGun | <<locked>> | 96% | 26,469 psi | 57% | 1965 fps | 95.7% |
| Hodgdon TrailBoss | 3.9 gr | 80% | 10,240 psi | 22% | 1043 fps | 100% |
| Lovex S040 | <<locked>> | 94% | 32,242 psi | 69% | 1906 fps | 95.7% |
| ReloadSwiss RS 14 | 4 gr | 80% | 8,615 psi | 19% | 1050 fps | 100% |
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 4 powders for .30 Carbine loaded with the .308 | 110gr | Speer TMJ. Hodgdon LilGun delivers the highest muzzle velocity at 2,054 fps; across all powders the maximum-charge window runs from 1,184 fps to 2,054 fps. Hodgdon LilGun gives the best case fill at 100 %, and 4 of the 4 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 29–83 %, leaving at least 17 % headroom. Hodgdon LilGun, Hodgdon TrailBoss, Lovex S040 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. Hodgdon TrailBoss, ReloadSwiss RS 14 rank at the top here: for .30 Carbine with the .308 | 110gr | Speer TMJ 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.