Load Specifications
Load data in caliber .308 Marlin Express with .308 | 155gr | Berger BT Target bullet and 44 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, IMR 3031 and Accurate 2520.
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% | 40,538 psi | 85% | 2415 fps | 99.5% |
| Accurate 2460 | <<locked>> | 90% | 41,582 psi | 87% | 2454 fps | 97.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,147 psi | 84% | 2484 fps | 99.7% |
| Accurate 2520 | <<locked>> | 94% | 41,234 psi | 86% | 2487 fps | 97.1% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,405 psi | 78% | 2451 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 84% | 41,379 psi | 86% | 2343 fps | 98.6% |
| Accurate LT-32 | <<locked>> | 84% | 41,800 psi | 87% | 2349 fps | 97% |
| ADI AR 2207 | <<locked>> | 82% | 41,017 psi | 86% | 2392 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 41,278 psi | 86% | 2467 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 96% | 42,525 psi | 89% | 2530 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 88% | 41,234 psi | 86% | 2438 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 82% | 42,351 psi | 88% | 2395 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 42,322 psi | 88% | 2385 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 92% | 43,076 psi | 90% | 2425 fps | 96.1% |
| Hodgdon BL-C2 | <<locked>> | 96% | 42,090 psi | 88% | 2520 fps | 96% |
| Hodgdon H322 | <<locked>> | 90% | 43,091 psi | 90% | 2497 fps | 98.8% |
| Hodgdon H335 | <<locked>> | 88% | 40,727 psi | 85% | 2461 fps | 97.5% |
| Hodgdon H4198 | <<locked>> | 82% | 43,033 psi | 90% | 2385 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,445 psi | 68% | 1532 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 43,062 psi | 90% | 2559 fps | 99.4% |
| IMR 4198 | <<locked>> | 88% | 43,279 psi | 90% | 2425 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 42,047 psi | 88% | 2464 fps | 97% |
| Lovex D073.5 | <<locked>> | 90% | 41,524 psi | 87% | 2454 fps | 96.2% |
| Lovex D073.6 | <<locked>> | 98% | 41,727 psi | 87% | 2510 fps | 97.2% |
| Norma 200 | <<locked>> | 84% | 41,394 psi | 86% | 2421 fps | 100% |
| Norma 202 | <<locked>> | 96% | 41,191 psi | 86% | 2470 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,198 psi | 67% | 1568 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 42,801 psi | 89% | 2470 fps | 97% |
| Rottweil R 901 | <<locked>> | 94% | 42,714 psi | 89% | 2461 fps | 97.8% |
| Shooters World AR Plus | <<locked>> | 84% | 42,047 psi | 88% | 2464 fps | 97% |
| Shooters World Match Rifle | <<locked>> | 98% | 41,727 psi | 87% | 2510 fps | 97.2% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 41,843 psi | 87% | 2470 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 42,177 psi | 88% | 2444 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 42,134 psi | 88% | 2392 fps | 97.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,321 psi | 84% | 2379 fps | 98.3% |
| Somchem S321 | <<locked>> | 92% | 42,873 psi | 90% | 2497 fps | 95.8% |
| Somchem S335 | <<locked>> | 96% | 43,221 psi | 90% | 2438 fps | 98.7% |
| Vihtavuori N120 | <<locked>> | 82% | 41,118 psi | 86% | 2352 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 42,032 psi | 88% | 2398 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 94% | 41,452 psi | 87% | 2402 fps | 99.5% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 41,336 psi | 86% | 2484 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 98% | 41,365 psi | 86% | 2448 fps | 98% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,525 psi | 89% | 2487 fps | 97.8% |
| Winchester 748 | <<locked>> | 94% | 40,988 psi | 86% | 2493 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 2015 | <<locked>> | 80% | 28,007 psi | 59% | 2152 fps | 96.5% |
| Accurate 2460 | <<locked>> | 84% | 33,968 psi | 71% | 2306 fps | 95.4% |
| Accurate 2495 | <<locked>> | 84% | 23,438 psi | 49% | 2110 fps | 95% |
| Accurate 2520 | 35.9 gr | 90% | 35,853 psi | 75% | 2388 fps | 95.6% |
| Accurate 4064 | <<locked>> | 94% | 30,632 psi | 64% | 2306 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 36,840 psi | 77% | 2260 fps | 97.7% |
| Accurate LT-32 | <<locked>> | 80% | 37,231 psi | 78% | 2264 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 38,551 psi | 81% | 2349 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,982 psi | 71% | 2320 fps | 96.7% |
| Alliant AR-Comp | 29.3 gr | 80% | 25,730 psi | 54% | 2162 fps | 98.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,430 psi | 68% | 2267 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,929 psi | 83% | 2356 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,824 psi | 73% | 2244 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 90% | 40,741 psi | 85% | 2385 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 94% | 39,392 psi | 82% | 2470 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 31,227 psi | 65% | 2257 fps | 95.7% |
| Hodgdon H335 | <<locked>> | 82% | 33,504 psi | 70% | 2313 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 40,596 psi | 85% | 2339 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,801 psi | 50% | 1365 fps | 100% |
| IMR 3031 | 30.7 gr | 84% | 27,775 psi | 58% | 2221 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 34,345 psi | 72% | 2260 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 80% | 36,608 psi | 76% | 2362 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 88% | 38,841 psi | 81% | 2402 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 94% | 36,651 psi | 77% | 2418 fps | 95.8% |
| Norma 200 | <<locked>> | 80% | 36,477 psi | 76% | 2333 fps | 99.8% |
| Norma 202 | <<locked>> | 88% | 32,039 psi | 67% | 2287 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,699 psi | 50% | 1398 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 37,521 psi | 78% | 2372 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 86% | 33,707 psi | 70% | 2280 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 36,608 psi | 76% | 2362 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 94% | 36,651 psi | 77% | 2418 fps | 95.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,345 psi | 72% | 2323 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,069 psi | 69% | 2267 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 32,924 psi | 69% | 2215 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 29,878 psi | 62% | 2165 fps | 95.1% |
| Somchem S321 | <<locked>> | 90% | 40,132 psi | 84% | 2448 fps | 95% |
| Somchem S335 | <<locked>> | 84% | 29,979 psi | 63% | 2175 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 38,725 psi | 81% | 2313 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,314 psi | 65% | 2192 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 27,209 psi | 57% | 2103 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 84% | 25,382 psi | 53% | 2133 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 90% | 32,329 psi | 68% | 2270 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 92% | 33,069 psi | 69% | 2300 fps | 95% |
| Winchester 748 | <<locked>> | 92% | 38,464 psi | 80% | 2441 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 44 powders for .308 Marlin Express loaded with the .308 | 155gr | Berger BT Target. IMR 3031 delivers the highest muzzle velocity at 2,559 fps; across all powders the maximum-charge window runs from 1,532 fps to 2,559 fps. Accurate 2495 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.308" calls for a 1:13.0 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. Alliant AR-Comp, IMR 3031, Accurate 2520 rank at the top here: for .308 Marlin Express with the .308 | 155gr | Berger BT Target 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.