Load Specifications
Load data in caliber .308 Marlin Express with .308 | 150gr | Lapua Mega bullet and 37 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H322, Alliant AR-Comp and ADI AR 2219.
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 1680 | <<locked>> | 82% | 42,511 psi | 89% | 2379 fps | 99.7% |
| Accurate 2015 | <<locked>> | 96% | 41,669 psi | 87% | 2448 fps | 99.2% |
| Accurate 2460 | <<locked>> | 94% | 43,062 psi | 90% | 2487 fps | 97% |
| Accurate 2495ᴾ | <<locked>> | 100% | 35,462 psi | 74% | 2415 fps | 98.5% |
| Accurate 2520 | <<locked>> | 98% | 42,438 psi | 89% | 2520 fps | 96.4% |
| Accurate LT-30 | <<locked>> | 86% | 40,959 psi | 86% | 2343 fps | 97.8% |
| Accurate LT-32 | <<locked>> | 86% | 41,437 psi | 87% | 2346 fps | 95.9% |
| ADI AR 2207 | <<locked>> | 86% | 42,554 psi | 89% | 2434 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 43,207 psi | 90% | 2507 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 98% | 41,031 psi | 86% | 2516 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 92% | 42,641 psi | 89% | 2477 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 84% | 41,945 psi | 88% | 2402 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 41,640 psi | 87% | 2379 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 92% | 42,061 psi | 88% | 2487 fps | 98% |
| Hodgdon H335 | <<locked>> | 92% | 42,699 psi | 89% | 2503 fps | 97.1% |
| Hodgdon H4198 | <<locked>> | 84% | 42,569 psi | 89% | 2382 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,531 psi | 66% | 1522 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 41,669 psi | 87% | 2543 fps | 98.7% |
| IMR 4198 | <<locked>> | 90% | 42,612 psi | 89% | 2428 fps | 100% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 39,972 psi | 84% | 2487 fps | 95.7% |
| Norma 200 | <<locked>> | 88% | 42,931 psi | 90% | 2464 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 42,308 psi | 88% | 2500 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,589 psi | 66% | 1562 fps | 100% |
| Rottweil R 901 | <<locked>> | 96% | 41,394 psi | 86% | 2444 fps | 96.6% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 39,972 psi | 84% | 2487 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 41,495 psi | 87% | 2182 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 40,741 psi | 85% | 2461 fps | 96.6% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 41,060 psi | 86% | 2438 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 41,176 psi | 86% | 2382 fps | 96.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 37,043 psi | 77% | 2323 fps | 96.6% |
| Somchem S335 | <<locked>> | 98% | 42,003 psi | 88% | 2425 fps | 97.8% |
| Vihtavuori N120 | <<locked>> | 86% | 42,714 psi | 89% | 2395 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 41,133 psi | 86% | 2395 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 98% | 42,554 psi | 89% | 2428 fps | 99.1% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 37,376 psi | 78% | 2425 fps | 98.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 40,350 psi | 84% | 2438 fps | 96.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 38,624 psi | 81% | 2421 fps | 95.8% |
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 1680 | <<locked>> | 80% | 39,972 psi | 84% | 2336 fps | 99.4% |
| Accurate 2015 | <<locked>> | 82% | 26,963 psi | 56% | 2139 fps | 95.1% |
| Accurate 2460 | <<locked>> | 90% | 37,623 psi | 79% | 2392 fps | 95.6% |
| Accurate 2495 | <<locked>> | 90% | 25,367 psi | 53% | 2185 fps | 95.1% |
| Accurate 2520 | <<locked>> | 96% | 39,769 psi | 83% | 2474 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 34,084 psi | 71% | 2208 fps | 96% |
| Accurate LT-32 | <<locked>> | 84% | 38,986 psi | 81% | 2300 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 35,346 psi | 74% | 2310 fps | 100% |
| ADI AR 2219 | 30.3 gr | 82% | 33,417 psi | 70% | 2313 fps | 95.5% |
| Alliant AR-Comp | 27.7 gr | 80% | 23,699 psi | 50% | 2103 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 29,631 psi | 62% | 2215 fps | 97.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,086 psi | 77% | 2313 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 32,213 psi | 67% | 2198 fps | 95.7% |
| Hodgdon H322 | 30 gr | 84% | 32,547 psi | 68% | 2293 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 88% | 37,217 psi | 78% | 2398 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 37,637 psi | 79% | 2290 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,206 psi | 48% | 1358 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 30,589 psi | 64% | 2303 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 31,995 psi | 67% | 2221 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 98% | 37,521 psi | 78% | 2441 fps | 95% |
| Norma 200 | <<locked>> | 80% | 33,475 psi | 70% | 2290 fps | 99% |
| Norma 202 | <<locked>> | 94% | 35,172 psi | 73% | 2362 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,090 psi | 48% | 1391 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 36,999 psi | 77% | 2362 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 98% | 37,521 psi | 78% | 2441 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,262 psi | 82% | 2149 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 35,795 psi | 75% | 2365 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 30,443 psi | 64% | 2215 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 36,260 psi | 76% | 2290 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 33,040 psi | 69% | 2241 fps | 95.2% |
| Somchem S335 | <<locked>> | 90% | 33,011 psi | 69% | 2251 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 35,549 psi | 74% | 2277 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,790 psi | 60% | 2142 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 84% | 28,137 psi | 59% | 2133 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 90% | 27,601 psi | 58% | 2201 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 96% | 35,708 psi | 75% | 2349 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 98% | 36,376 psi | 76% | 2375 fps | 95.1% |
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 | Lapua Mega. IMR 3031 delivers the highest muzzle velocity at 2,543 fps; across all powders the maximum-charge window runs from 1,522 fps to 2,543 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 66–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Hodgdon TrailBoss, IMR 3031 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 H322, Alliant AR-Comp, ADI AR 2219 rank at the top here: for .308 Marlin Express with the .308 | 150gr | Lapua Mega 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.