Load Specifications
Load data in caliber .308 Marlin Express with .308 | 172gr | Speer Impact bullet and 49 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Winchester 748 and Alliant AR-Comp.
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% | 41,843 psi | 87% | 2283 fps | 99.8% |
| Accurate 2460 | <<locked>> | 90% | 42,772 psi | 89% | 2323 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 41,510 psi | 87% | 2352 fps | 99.9% |
| Accurate 2520 | <<locked>> | 94% | 42,511 psi | 89% | 2359 fps | 98% |
| Accurate 4064ᴾ | <<locked>> | 100% | 38,609 psi | 81% | 2323 fps | 98.4% |
| Accurate LT-30 | <<locked>> | 84% | 42,612 psi | 89% | 2215 fps | 99.3% |
| Accurate LT-32 | <<locked>> | 84% | 43,004 psi | 90% | 2224 fps | 97.9% |
| ADI AR 2207 | <<locked>> | 82% | 42,380 psi | 89% | 2254 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 42,612 psi | 89% | 2336 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 92% | 41,060 psi | 86% | 2290 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 94% | 40,857 psi | 85% | 2346 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 88% | 42,496 psi | 89% | 2303 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 43,163 psi | 90% | 2251 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 90% | 41,568 psi | 87% | 2254 fps | 96.5% |
| Hodgdon BL-C2 | <<locked>> | 94% | 40,567 psi | 85% | 2346 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 88% | 41,495 psi | 87% | 2316 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 88% | 41,771 psi | 87% | 2329 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,619 psi | 68% | 1427 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 41,568 psi | 87% | 2379 fps | 99.6% |
| IMR 4198 | <<locked>> | 86% | 41,742 psi | 87% | 2244 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 41,060 psi | 86% | 2290 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 84% | 43,207 psi | 90% | 2329 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 90% | 42,598 psi | 89% | 2323 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 98% | 43,207 psi | 90% | 2382 fps | 98.2% |
| Lovex S062ᴾ | <<locked>> | 100% | 42,569 psi | 89% | 2336 fps | 96.3% |
| Norma 200 | <<locked>> | 84% | 42,598 psi | 89% | 2283 fps | 100% |
| Norma 201 | <<locked>> | 96% | 42,569 psi | 89% | 2320 fps | 96.3% |
| Norma 202 | <<locked>> | 96% | 42,351 psi | 88% | 2339 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,445 psi | 68% | 1460 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 41,060 psi | 86% | 2290 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 92% | 41,481 psi | 87% | 2287 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 98% | 42,699 psi | 89% | 2313 fps | 96.2% |
| Shooters World AR Plus | <<locked>> | 84% | 43,207 psi | 90% | 2329 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 98% | 43,207 psi | 90% | 2382 fps | 98.2% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 42,569 psi | 89% | 2336 fps | 96.3% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 43,120 psi | 90% | 2343 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 40,727 psi | 85% | 2267 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 43,076 psi | 90% | 2260 fps | 98.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,350 psi | 86% | 2251 fps | 99% |
| Somchem S321 | <<locked>> | 90% | 41,002 psi | 86% | 2316 fps | 96.1% |
| Somchem S335 | <<locked>> | 94% | 41,669 psi | 87% | 2264 fps | 98.9% |
| Vihtavuori N120 | <<locked>> | 82% | 42,496 psi | 89% | 2215 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 40,785 psi | 85% | 2228 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 42,438 psi | 89% | 2264 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,641 psi | 89% | 2349 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 42,743 psi | 89% | 2323 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 92% | 41,234 psi | 86% | 2290 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 98% | 40,988 psi | 86% | 2313 fps | 98.1% |
| Winchester 748 | <<locked>> | 94% | 42,032 psi | 88% | 2362 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% | 28,819 psi | 60% | 2037 fps | 97.6% |
| Accurate 2460 | <<locked>> | 80% | 30,748 psi | 64% | 2100 fps | 95.1% |
| Accurate 2495 | <<locked>> | 82% | 22,800 psi | 48% | 1965 fps | 95.7% |
| Accurate 2520 | <<locked>> | 86% | 32,300 psi | 67% | 2172 fps | 95.3% |
| Accurate 4064 | <<locked>> | 90% | 28,007 psi | 59% | 2106 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 37,637 psi | 79% | 2133 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 80% | 38,029 psi | 79% | 2136 fps | 96.8% |
| ADI AR 2207 | <<locked>> | 80% | 39,740 psi | 83% | 2215 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,983 psi | 73% | 2198 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 90% | 38,667 psi | 81% | 2247 fps | 95% |
| Alliant AR-Comp | 27.5 gr | 80% | 26,440 psi | 55% | 2051 fps | 99% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,214 psi | 69% | 2139 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,665 psi | 75% | 2123 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 36,898 psi | 77% | 2169 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 92% | 37,840 psi | 79% | 2293 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 31,952 psi | 67% | 2136 fps | 96.9% |
| Hodgdon H335 | <<locked>> | 80% | 32,184 psi | 67% | 2146 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,062 psi | 50% | 1273 fps | 100% |
| IMR 3031 | 28.2 gr | 82% | 27,006 psi | 56% | 2070 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 35,128 psi | 73% | 2133 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 38,667 psi | 81% | 2247 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 37,666 psi | 79% | 2238 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 84% | 34,635 psi | 72% | 2178 fps | 95% |
| Lovex D073.6 | <<locked>> | 90% | 33,098 psi | 69% | 2201 fps | 95.5% |
| Lovex S062 | <<locked>> | 98% | 40,001 psi | 84% | 2293 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 37,550 psi | 78% | 2205 fps | 100% |
| Norma 201 | <<locked>> | 94% | 40,030 psi | 84% | 2277 fps | 95.6% |
| Norma 202 | <<locked>> | 86% | 30,951 psi | 65% | 2123 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,047 psi | 50% | 1306 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 33,837 psi | 71% | 2156 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 82% | 30,951 psi | 65% | 2080 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 96% | 40,132 psi | 84% | 2270 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 37,666 psi | 79% | 2238 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 33,098 psi | 69% | 2201 fps | 95.5% |
| Shooters World Precision | <<locked>> | 98% | 40,001 psi | 84% | 2293 fps | 95.6% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 35,244 psi | 74% | 2201 fps | 96.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,866 psi | 71% | 2142 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 31,633 psi | 66% | 2054 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 28,979 psi | 61% | 2014 fps | 95.7% |
| Somchem S321 | <<locked>> | 88% | 38,609 psi | 81% | 2274 fps | 95.5% |
| Somchem S335 | <<locked>> | 82% | 29,022 psi | 61% | 2018 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 39,856 psi | 83% | 2178 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,010 psi | 67% | 2067 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 80% | 27,833 psi | 58% | 1988 fps | 97% |
| Vihtavuori N135 | <<locked>> | 80% | 23,134 psi | 48% | 1939 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 86% | 29,341 psi | 61% | 2064 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 90% | 38,348 psi | 80% | 2238 fps | 95% |
| Vihtavuori N540 | <<locked>> | 90% | 31,908 psi | 67% | 2139 fps | 95.5% |
| Winchester 748 | 33.5 gr | 90% | 36,927 psi | 77% | 2267 fps | 95.5% |
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 49 powders for .308 Marlin Express loaded with the .308 | 172gr | Speer Impact. Lovex D073.6 delivers the highest muzzle velocity at 2,382 fps; across all powders the maximum-charge window runs from 1,427 fps to 2,382 fps. Accurate 2495 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 68–90 %, leaving at least 10 % headroom. The 172.0 gr projectile in 0.308" calls for a 1:11.5 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, Winchester 748, Alliant AR-Comp rank at the top here: for .308 Marlin Express with the .308 | 172gr | Speer Impact 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.