Load Specifications
Load data in caliber .308 Marlin Express with .308 | 170gr | Lapua Naturalis bullet and 47 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 Hodgdon H322.
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>> | 94% | 41,800 psi | 87% | 2300 fps | 99.8% |
| Accurate 2460 | <<locked>> | 92% | 43,120 psi | 90% | 2343 fps | 98.3% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,130 psi | 80% | 2316 fps | 99.7% |
| Accurate 2520 | <<locked>> | 96% | 42,946 psi | 90% | 2382 fps | 97.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 35,563 psi | 74% | 2287 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 86% | 43,076 psi | 90% | 2234 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 84% | 41,234 psi | 86% | 2205 fps | 97.3% |
| ADI AR 2207 | <<locked>> | 84% | 42,511 psi | 89% | 2274 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 40,277 psi | 84% | 2310 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 96% | 41,437 psi | 87% | 2369 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 42,975 psi | 90% | 2326 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 82% | 41,350 psi | 86% | 2241 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 41,423 psi | 87% | 2234 fps | 99.2% |
| Hodgdon Benchmark | <<locked>> | 92% | 42,235 psi | 88% | 2277 fps | 96.4% |
| Hodgdon BL-C2 | <<locked>> | 96% | 41,118 psi | 86% | 2365 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 90% | 41,785 psi | 87% | 2336 fps | 99% |
| Hodgdon H335 | <<locked>> | 90% | 42,380 psi | 89% | 2352 fps | 98.3% |
| Hodgdon H4198 | <<locked>> | 82% | 42,308 psi | 88% | 2234 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,952 psi | 67% | 1424 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 41,742 psi | 87% | 2395 fps | 99.6% |
| IMR 4198 | <<locked>> | 88% | 42,511 psi | 89% | 2270 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 40,872 psi | 85% | 2306 fps | 97.2% |
| Lovex D073.5 | <<locked>> | 92% | 42,946 psi | 90% | 2343 fps | 97.1% |
| Lovex D073.6 | <<locked>> | 98% | 40,538 psi | 85% | 2352 fps | 97.4% |
| Norma 200 | <<locked>> | 86% | 42,685 psi | 89% | 2306 fps | 100% |
| Norma 201 | <<locked>> | 98% | 42,598 psi | 89% | 2333 fps | 96% |
| Norma 202 | <<locked>> | 98% | 42,540 psi | 89% | 2356 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,662 psi | 66% | 1457 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 41,684 psi | 87% | 2313 fps | 97.2% |
| Rottweil R 901 | <<locked>> | 94% | 41,205 psi | 86% | 2300 fps | 97.9% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 42,728 psi | 89% | 2326 fps | 96% |
| Shooters World AR Plus | <<locked>> | 84% | 40,872 psi | 85% | 2306 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 98% | 40,538 psi | 85% | 2352 fps | 97.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 43,236 psi | 90% | 2057 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 40,698 psi | 85% | 2316 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 41,365 psi | 86% | 2293 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 41,017 psi | 86% | 2241 fps | 97.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,537 psi | 83% | 2234 fps | 98.5% |
| Somchem S321 | <<locked>> | 92% | 41,553 psi | 87% | 2339 fps | 96% |
| Somchem S335 | <<locked>> | 96% | 41,800 psi | 87% | 2280 fps | 98.8% |
| Vihtavuori N120 | <<locked>> | 84% | 42,728 psi | 89% | 2234 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 40,930 psi | 86% | 2244 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 96% | 42,772 psi | 89% | 2283 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,379 psi | 84% | 2329 fps | 99.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,062 psi | 90% | 2339 fps | 98.7% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,234 psi | 86% | 2329 fps | 97.9% |
| Winchester 748 | <<locked>> | 96% | 42,366 psi | 89% | 2379 fps | 96.8% |
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% | 26,701 psi | 56% | 2008 fps | 96.7% |
| Accurate 2460 | <<locked>> | 84% | 32,561 psi | 68% | 2156 fps | 95.6% |
| Accurate 2495 | <<locked>> | 84% | 21,959 psi | 46% | 1962 fps | 95% |
| Accurate 2520 | <<locked>> | 88% | 32,242 psi | 67% | 2188 fps | 95% |
| Accurate 4064 | <<locked>> | 94% | 29,066 psi | 61% | 2152 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 35,882 psi | 75% | 2113 fps | 97.9% |
| Accurate LT-32 | <<locked>> | 80% | 36,289 psi | 76% | 2116 fps | 96% |
| ADI AR 2207 | <<locked>> | 80% | 37,507 psi | 78% | 2198 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,127 psi | 69% | 2175 fps | 97% |
| Alliant AR-Comp | 27.1 gr | 80% | 24,671 psi | 52% | 2018 fps | 98.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,372 psi | 66% | 2119 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 80% | 38,769 psi | 81% | 2201 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,997 psi | 71% | 2106 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 37,318 psi | 78% | 2192 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 94% | 38,247 psi | 80% | 2316 fps | 95.5% |
| Hodgdon H322 | 28 gr | 80% | 30,182 psi | 63% | 2110 fps | 96% |
| Hodgdon H335 | <<locked>> | 82% | 32,358 psi | 68% | 2162 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 39,697 psi | 83% | 2188 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,656 psi | 49% | 1276 fps | 100% |
| IMR 3031 | 28.5 gr | 84% | 26,963 psi | 56% | 2083 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 33,605 psi | 70% | 2116 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 80% | 35,404 psi | 74% | 2208 fps | 95.7% |
| Lovex D073.5 | <<locked>> | 88% | 37,304 psi | 78% | 2247 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 92% | 32,779 psi | 68% | 2211 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 35,056 psi | 73% | 2178 fps | 99.9% |
| Norma 201 | <<locked>> | 96% | 39,972 psi | 84% | 2290 fps | 95.3% |
| Norma 202 | <<locked>> | 88% | 31,024 psi | 65% | 2139 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,221 psi | 49% | 1299 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 34,098 psi | 71% | 2175 fps | 95% |
| Rottweil R 901 | <<locked>> | 86% | 32,561 psi | 68% | 2136 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 98% | 40,103 psi | 84% | 2283 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 35,404 psi | 74% | 2208 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 92% | 32,779 psi | 68% | 2211 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,872 psi | 85% | 2024 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 33,344 psi | 70% | 2178 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,937 psi | 67% | 2119 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 31,836 psi | 67% | 2070 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 28,877 psi | 60% | 2028 fps | 95.4% |
| Somchem S321 | <<locked>> | 90% | 39,015 psi | 82% | 2293 fps | 95.3% |
| Somchem S335 | <<locked>> | 84% | 28,892 psi | 60% | 2034 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 37,753 psi | 79% | 2162 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,095 psi | 63% | 2044 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 80% | 26,136 psi | 55% | 1962 fps | 96.1% |
| Vihtavuori N135 | <<locked>> | 84% | 24,424 psi | 51% | 1995 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 90% | 31,343 psi | 65% | 2126 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 92% | 32,097 psi | 67% | 2159 fps | 95.3% |
| Winchester 748 | <<locked>> | 92% | 37,405 psi | 78% | 2290 fps | 95.4% |
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 47 powders for .308 Marlin Express loaded with the .308 | 170gr | Lapua Naturalis. IMR 3031 delivers the highest muzzle velocity at 2,395 fps; across all powders the maximum-charge window runs from 1,424 fps to 2,395 fps. Accurate 2495 gives the best case fill at 100 %, and 47 of the 47 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 170.0 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. Alliant AR-Comp, IMR 3031, Hodgdon H322 rank at the top here: for .308 Marlin Express with the .308 | 170gr | Lapua Naturalis 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.