Load Specifications
Load data in caliber .30 Rem. with .308 | 125gr | X-TREME FMJ bullet and 12 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 4198, ReloadSwiss RS 14 and Hodgdon TrailBoss.
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: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 35,447 psi | 87% | 2365 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 86% | 34,708 psi | 85% | 2441 fps | 99.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 35,041 psi | 86% | 2507 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 94% | 36,289 psi | 89% | 2493 fps | 96.4% |
| Alliant Reloder-7 | <<locked>> | 86% | 36,579 psi | 90% | 2431 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,081 psi | 74% | 1598 fps | 100% |
| IMR 4198 | <<locked>> | 90% | 35,607 psi | 88% | 2418 fps | 96.9% |
| Norma 200 | <<locked>> | 90% | 36,405 psi | 90% | 2484 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,588 psi | 73% | 1634 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 35,302 psi | 87% | 2241 fps | 100% |
| Vihtavuori N120 | <<locked>> | 86% | 34,983 psi | 86% | 2415 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 94% | 35,578 psi | 88% | 2415 fps | 95.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 33,199 psi | 82% | 2316 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 28,703 psi | 71% | 2300 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 96% | 31,053 psi | 76% | 2405 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 90% | 32,285 psi | 80% | 2405 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 82% | 32,329 psi | 80% | 2339 fps | 95.5% |
| Hodgdon TrailBoss | 9 gr | 80% | 21,915 psi | 54% | 1424 fps | 100% |
| IMR 4198 | 25.9 gr | 86% | 31,821 psi | 78% | 2326 fps | 95.6% |
| Norma 200 | <<locked>> | 84% | 30,356 psi | 75% | 2346 fps | 95.2% |
| ReloadSwiss RS 14 | 9.2 gr | 80% | 21,654 psi | 53% | 1457 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 33,272 psi | 82% | 2205 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 29,022 psi | 71% | 2280 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 92% | 33,547 psi | 83% | 2372 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 12 powders for .30 Rem. loaded with the .308 | 125gr | X-TREME FMJ. Alliant AR-Comp delivers the highest muzzle velocity at 2,507 fps; across all powders the maximum-charge window runs from 1,598 fps to 2,507 fps. Alliant AR-Comp gives the best case fill at 100 %, and 12 of the 12 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.308" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Alliant AR-Comp, Hodgdon TrailBoss, ReloadSwiss RS 14 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. IMR 4198, ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for .30 Rem. with the .308 | 125gr | X-TREME FMJ they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.