Load Specifications
Load data in caliber .308 Marlin Express with .308 | 150gr | Impala LWH CHP bullet and 37 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Alliant AR-Comp and Hodgdon H335.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 92% | 42,786 psi | 89% | 2461 fps | 99.4% |
| Accurate 2460 | <<locked>> | 88% | 41,075 psi | 86% | 2451 fps | 96.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 43,091 psi | 90% | 2539 fps | 99.7% |
| Accurate 2520 | <<locked>> | 94% | 43,091 psi | 90% | 2530 fps | 96.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 40,089 psi | 84% | 2503 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 84% | 42,815 psi | 89% | 2379 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 84% | 43,207 psi | 90% | 2385 fps | 96.8% |
| ADI AR 2207 | <<locked>> | 82% | 42,844 psi | 90% | 2431 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 42,946 psi | 90% | 2507 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 94% | 41,539 psi | 87% | 2526 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 40,973 psi | 86% | 2441 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 41,002 psi | 86% | 2372 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 88% | 41,582 psi | 87% | 2480 fps | 98.1% |
| Hodgdon H335 | <<locked>> | 88% | 42,264 psi | 88% | 2500 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,953 psi | 69% | 1549 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 42,134 psi | 88% | 2552 fps | 99% |
| IMR 4198 | <<locked>> | 86% | 42,134 psi | 88% | 2418 fps | 100% |
| Lovex D073.4 | <<locked>> | 82% | 41,191 psi | 86% | 2454 fps | 96.1% |
| Lovex D073.6 | <<locked>> | 96% | 41,176 psi | 86% | 2510 fps | 96.4% |
| Norma 200 | <<locked>> | 82% | 41,698 psi | 87% | 2431 fps | 100% |
| Norma 202 | <<locked>> | 96% | 42,757 psi | 89% | 2510 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,185 psi | 69% | 1591 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 41,553 psi | 87% | 2457 fps | 96% |
| Rottweil R 901 | <<locked>> | 92% | 43,192 psi | 90% | 2470 fps | 97.3% |
| Shooters World AR Plus | <<locked>> | 82% | 41,191 psi | 86% | 2454 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 96% | 41,176 psi | 86% | 2510 fps | 96.4% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 43,279 psi | 90% | 2507 fps | 97.5% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 41,292 psi | 86% | 2441 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 41,292 psi | 86% | 2385 fps | 96.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,742 psi | 87% | 2415 fps | 98.1% |
| Somchem S335 | <<locked>> | 94% | 42,670 psi | 89% | 2434 fps | 98.2% |
| Vihtavuori N120 | <<locked>> | 82% | 42,815 psi | 89% | 2392 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 41,495 psi | 87% | 2398 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 94% | 42,786 psi | 89% | 2434 fps | 99.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,975 psi | 90% | 2523 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 98% | 42,888 psi | 90% | 2487 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 98% | 41,466 psi | 87% | 2477 fps | 97% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 30,400 psi | 64% | 2208 fps | 96.8% |
| Accurate 2460 | <<locked>> | 84% | 36,550 psi | 76% | 2362 fps | 95.5% |
| Accurate 2495 | <<locked>> | 82% | 25,280 psi | 53% | 2149 fps | 95.2% |
| Accurate 2520 | <<locked>> | 90% | 38,218 psi | 80% | 2441 fps | 95.6% |
| Accurate 4064 | <<locked>> | 94% | 33,692 psi | 70% | 2372 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 38,319 psi | 80% | 2297 fps | 97.6% |
| Accurate LT-32 | <<locked>> | 80% | 38,653 psi | 81% | 2300 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 40,393 psi | 84% | 2392 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 35,795 psi | 75% | 2365 fps | 96.7% |
| Alliant AR-Comp | 29 gr | 80% | 27,746 psi | 58% | 2215 fps | 98.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,505 psi | 72% | 2313 fps | 98.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,419 psi | 76% | 2283 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 80% | 32,779 psi | 68% | 2293 fps | 95.6% |
| Hodgdon H335 | 32.8 gr | 82% | 35,099 psi | 73% | 2352 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,613 psi | 51% | 1385 fps | 100% |
| IMR 3031 | 30.4 gr | 84% | 29,805 psi | 62% | 2274 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 35,766 psi | 75% | 2300 fps | 99.6% |
| Lovex D073.4 | <<locked>> | 80% | 38,566 psi | 81% | 2405 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 94% | 38,609 psi | 81% | 2461 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 39,218 psi | 82% | 2385 fps | 99.8% |
| Norma 202 | <<locked>> | 90% | 35,984 psi | 75% | 2375 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,656 psi | 52% | 1421 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 39,349 psi | 82% | 2415 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 86% | 36,608 psi | 76% | 2339 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 38,566 psi | 81% | 2405 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 94% | 38,609 psi | 81% | 2461 fps | 95.7% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 35,940 psi | 75% | 2362 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,780 psi | 73% | 2310 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 34,896 psi | 73% | 2260 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 31,720 psi | 66% | 2211 fps | 95.1% |
| Somchem S335 | <<locked>> | 84% | 32,256 psi | 67% | 2224 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 40,422 psi | 84% | 2352 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 33,243 psi | 69% | 2234 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 29,109 psi | 61% | 2149 fps | 96% |
| Vihtavuori N135 | <<locked>> | 82% | 26,136 psi | 55% | 2146 fps | 95% |
| Vihtavuori N140 | <<locked>> | 90% | 34,316 psi | 72% | 2316 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 94% | 37,043 psi | 77% | 2392 fps | 95.7% |
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 37 powders for .308 Marlin Express loaded with the .308 | 150gr | Impala LWH CHP. IMR 3031 delivers the highest muzzle velocity at 2,552 fps; across all powders the maximum-charge window runs from 1,549 fps to 2,552 fps. Accurate 2495 gives the best case fill at 100 %, and 37 of the 37 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, 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. IMR 3031, Alliant AR-Comp, Hodgdon H335 rank at the top here: for .308 Marlin Express with the .308 | 150gr | Impala LWH CHP 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.