Load Specifications
Load data in caliber .308 Marlin Express with .308 | 167gr | TWENTY-NINE SILENTIO 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>> | 94% | 42,612 psi | 89% | 2326 fps | 99.8% |
| Accurate 2460 | <<locked>> | 90% | 41,234 psi | 86% | 2326 fps | 97.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 39,334 psi | 82% | 2349 fps | 99.7% |
| Accurate 2520 | <<locked>> | 94% | 40,843 psi | 85% | 2362 fps | 97.3% |
| Accurate 4064ᴾ | <<locked>> | 100% | 36,637 psi | 77% | 2316 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 84% | 41,365 psi | 86% | 2224 fps | 98.8% |
| Accurate LT-32 | <<locked>> | 84% | 41,756 psi | 87% | 2228 fps | 97.3% |
| ADI AR 2207 | <<locked>> | 84% | 43,250 psi | 90% | 2300 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 40,828 psi | 85% | 2336 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 96% | 42,047 psi | 88% | 2395 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 88% | 40,988 psi | 86% | 2310 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 82% | 42,134 psi | 88% | 2267 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 41,901 psi | 88% | 2257 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 92% | 42,772 psi | 89% | 2300 fps | 96.3% |
| Hodgdon BL-C2 | <<locked>> | 96% | 41,742 psi | 87% | 2392 fps | 96.2% |
| Hodgdon H322 | <<locked>> | 90% | 42,308 psi | 88% | 2359 fps | 98.9% |
| Hodgdon H335 | <<locked>> | 90% | 42,975 psi | 90% | 2375 fps | 98.3% |
| Hodgdon H4198 | <<locked>> | 82% | 42,859 psi | 90% | 2257 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,474 psi | 68% | 1444 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 42,337 psi | 88% | 2418 fps | 99.5% |
| IMR 4198 | <<locked>> | 88% | 43,047 psi | 90% | 2297 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 41,640 psi | 87% | 2333 fps | 97.2% |
| Lovex D073.5 | <<locked>> | 90% | 41,017 psi | 86% | 2323 fps | 96.4% |
| Lovex D073.6 | <<locked>> | 98% | 41,176 psi | 86% | 2379 fps | 97.3% |
| Norma 200 | <<locked>> | 84% | 40,988 psi | 86% | 2293 fps | 100% |
| Norma 202 | <<locked>> | 98% | 43,134 psi | 90% | 2382 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,256 psi | 67% | 1476 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 42,279 psi | 88% | 2339 fps | 97.1% |
| Rottweil R 901 | <<locked>> | 94% | 42,192 psi | 88% | 2326 fps | 97.9% |
| Shooters World AR Plus | <<locked>> | 84% | 41,640 psi | 87% | 2333 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 98% | 41,176 psi | 86% | 2379 fps | 97.3% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 41,307 psi | 86% | 2339 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 41,887 psi | 88% | 2316 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 41,698 psi | 87% | 2264 fps | 97.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,074 psi | 84% | 2257 fps | 98.4% |
| Somchem S321 | <<locked>> | 92% | 42,177 psi | 88% | 2362 fps | 95.9% |
| Somchem S335 | <<locked>> | 96% | 42,511 psi | 89% | 2303 fps | 98.8% |
| Vihtavuori N120 | <<locked>> | 82% | 41,031 psi | 86% | 2228 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 41,640 psi | 87% | 2267 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 96% | 43,294 psi | 90% | 2306 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 41,002 psi | 86% | 2356 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 98% | 40,930 psi | 86% | 2323 fps | 98.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,192 psi | 88% | 2359 fps | 97.9% |
| Winchester 748 | <<locked>> | 96% | 43,279 psi | 90% | 2408 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% | 27,644 psi | 58% | 2037 fps | 96.8% |
| Accurate 2460 | <<locked>> | 84% | 33,460 psi | 70% | 2185 fps | 95.6% |
| Accurate 2495 | <<locked>> | 84% | 23,163 psi | 48% | 2001 fps | 95.4% |
| Accurate 2520 | 32.6 gr | 88% | 33,011 psi | 69% | 2215 fps | 95% |
| Accurate 4064 | <<locked>> | 94% | 30,400 psi | 64% | 2192 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 36,492 psi | 76% | 2136 fps | 97.9% |
| Accurate LT-32 | <<locked>> | 80% | 36,883 psi | 77% | 2139 fps | 96% |
| ADI AR 2207 | <<locked>> | 80% | 38,290 psi | 80% | 2224 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,765 psi | 71% | 2201 fps | 97% |
| Alliant AR-Comp | 27.2 gr | 80% | 25,454 psi | 53% | 2047 fps | 98.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,213 psi | 67% | 2149 fps | 99.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,581 psi | 83% | 2228 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,577 psi | 72% | 2129 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 37,971 psi | 79% | 2215 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 94% | 38,885 psi | 81% | 2339 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 30,835 psi | 64% | 2133 fps | 95.9% |
| Hodgdon H335 | <<locked>> | 82% | 32,996 psi | 69% | 2188 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 40,234 psi | 84% | 2215 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,859 psi | 50% | 1286 fps | 100% |
| IMR 3031 | 28.6 gr | 84% | 27,702 psi | 58% | 2113 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 33,895 psi | 71% | 2136 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 80% | 36,245 psi | 76% | 2238 fps | 95.7% |
| Lovex D073.5 | <<locked>> | 88% | 38,189 psi | 80% | 2274 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 92% | 33,895 psi | 71% | 2244 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 36,172 psi | 76% | 2208 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 31,749 psi | 66% | 2169 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,815 psi | 50% | 1319 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 34,766 psi | 73% | 2201 fps | 95% |
| Rottweil R 901 | <<locked>> | 86% | 33,359 psi | 70% | 2162 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 36,245 psi | 76% | 2238 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 92% | 33,895 psi | 71% | 2244 fps | 95.3% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,011 psi | 71% | 2201 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,619 psi | 68% | 2142 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 32,576 psi | 68% | 2096 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 29,544 psi | 62% | 2051 fps | 95.4% |
| Somchem S321 | <<locked>> | 90% | 39,624 psi | 83% | 2316 fps | 95.2% |
| Somchem S335 | <<locked>> | 84% | 29,747 psi | 62% | 2060 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 38,406 psi | 80% | 2188 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,879 psi | 65% | 2070 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 80% | 26,861 psi | 56% | 1988 fps | 96.1% |
| Vihtavuori N135 | <<locked>> | 84% | 25,019 psi | 52% | 2018 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 90% | 32,010 psi | 67% | 2149 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 92% | 32,808 psi | 69% | 2185 fps | 95.3% |
| Winchester 748 | <<locked>> | 92% | 38,000 psi | 79% | 2313 fps | 95.3% |
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 | 167gr | TWENTY-NINE SILENTIO. IMR 3031 delivers the highest muzzle velocity at 2,418 fps; across all powders the maximum-charge window runs from 1,444 fps to 2,418 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 167.0 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, Accurate 2520 rank at the top here: for .308 Marlin Express with the .308 | 167gr | TWENTY-NINE SILENTIO 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.