Load Specifications
Load data in caliber .308 Marlin Express with .311 | 155gr | Frontier FBSP bullet and 40 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, SNPE Vectan SP 10 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 2015 | <<locked>> | 96% | 42,917 psi | 90% | 2425 fps | 99.5% |
| Accurate 2460 | <<locked>> | 92% | 41,336 psi | 86% | 2421 fps | 97% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,434 psi | 76% | 2395 fps | 98.9% |
| Accurate 2520 | <<locked>> | 96% | 40,756 psi | 85% | 2451 fps | 96.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 33,997 psi | 71% | 2356 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 86% | 41,916 psi | 88% | 2320 fps | 98.3% |
| Accurate LT-32 | <<locked>> | 86% | 42,351 psi | 88% | 2326 fps | 96.6% |
| ADI AR 2207 | <<locked>> | 84% | 41,263 psi | 86% | 2369 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 41,727 psi | 87% | 2441 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 98% | 42,308 psi | 88% | 2497 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 41,133 psi | 86% | 2408 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 84% | 42,554 psi | 89% | 2369 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 42,380 psi | 89% | 2352 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 92% | 42,844 psi | 90% | 2461 fps | 98.4% |
| Hodgdon H335 | <<locked>> | 90% | 40,654 psi | 85% | 2428 fps | 97% |
| Hodgdon H4198 | <<locked>> | 82% | 40,915 psi | 85% | 2313 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,894 psi | 67% | 1499 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,554 psi | 89% | 2516 fps | 99.1% |
| IMR 4198 | <<locked>> | 90% | 43,192 psi | 90% | 2395 fps | 100% |
| Lovex D073.4 | <<locked>> | 86% | 41,930 psi | 88% | 2428 fps | 96.4% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 41,379 psi | 86% | 2474 fps | 96.5% |
| Norma 200 | <<locked>> | 86% | 41,510 psi | 87% | 2398 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 43,265 psi | 90% | 2474 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,618 psi | 66% | 1532 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 42,656 psi | 89% | 2434 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 96% | 42,583 psi | 89% | 2425 fps | 97.2% |
| Shooters World AR Plus | <<locked>> | 86% | 41,930 psi | 88% | 2428 fps | 96.4% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 41,379 psi | 86% | 2474 fps | 96.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 42,250 psi | 88% | 2152 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 41,916 psi | 88% | 2441 fps | 97.2% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 42,134 psi | 88% | 2415 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 41,930 psi | 88% | 2356 fps | 97.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,072 psi | 80% | 2306 fps | 97.2% |
| Somchem S335 | <<locked>> | 98% | 42,830 psi | 89% | 2398 fps | 98.2% |
| Vihtavuori N120 | <<locked>> | 84% | 41,437 psi | 87% | 2333 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 42,264 psi | 88% | 2372 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 96% | 41,104 psi | 86% | 2365 fps | 99.2% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,551 psi | 81% | 2408 fps | 99.1% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 41,191 psi | 86% | 2411 fps | 97.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 39,798 psi | 83% | 2405 fps | 96.6% |
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% | 26,237 psi | 55% | 2083 fps | 95.2% |
| Accurate 2460 | <<locked>> | 88% | 36,143 psi | 76% | 2323 fps | 95.5% |
| Accurate 2495 | <<locked>> | 88% | 24,656 psi | 52% | 2126 fps | 95.2% |
| Accurate 2520 | <<locked>> | 94% | 38,203 psi | 80% | 2405 fps | 95.7% |
| Accurate 4064 | <<locked>> | 98% | 31,894 psi | 67% | 2310 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 34,838 psi | 73% | 2188 fps | 96.6% |
| Accurate LT-32 | <<locked>> | 82% | 37,449 psi | 78% | 2234 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 36,260 psi | 76% | 2283 fps | 100% |
| ADI AR 2219 | 29.4 gr | 80% | 31,923 psi | 67% | 2241 fps | 95.4% |
| Alliant AR-Comp | 27.6 gr | 80% | 24,279 psi | 51% | 2090 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,385 psi | 63% | 2195 fps | 98% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,927 psi | 79% | 2290 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,054 psi | 69% | 2178 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 82% | 31,357 psi | 66% | 2228 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 86% | 35,723 psi | 75% | 2329 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 38,406 psi | 80% | 2267 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,496 psi | 49% | 1339 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 29,573 psi | 62% | 2241 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 32,358 psi | 68% | 2188 fps | 99.1% |
| Lovex D073.4 | <<locked>> | 84% | 39,378 psi | 82% | 2382 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 96% | 36,042 psi | 75% | 2375 fps | 95% |
| Norma 200 | <<locked>> | 80% | 34,403 psi | 72% | 2267 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 33,736 psi | 70% | 2297 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,395 psi | 49% | 1371 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 40,132 psi | 84% | 2388 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 90% | 35,534 psi | 74% | 2290 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 84% | 39,378 psi | 82% | 2382 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 96% | 36,042 psi | 75% | 2375 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,972 psi | 84% | 2119 fps | 100% |
| SNPE Vectan SP 10 | 31.2 gr | 82% | 34,330 psi | 72% | 2297 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 30,937 psi | 65% | 2188 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 34,998 psi | 73% | 2228 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 31,894 psi | 67% | 2182 fps | 95.2% |
| Somchem S335 | <<locked>> | 88% | 31,937 psi | 67% | 2192 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 36,434 psi | 76% | 2251 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,240 psi | 61% | 2116 fps | 97.3% |
| Vihtavuori N133 | <<locked>> | 82% | 27,122 psi | 57% | 2073 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 88% | 26,701 psi | 56% | 2142 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 94% | 34,316 psi | 72% | 2280 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 96% | 34,940 psi | 73% | 2310 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 40 powders for .308 Marlin Express loaded with the .311 | 155gr | Frontier FBSP. IMR 3031 delivers the highest muzzle velocity at 2,516 fps; across all powders the maximum-charge window runs from 1,499 fps to 2,516 fps. Accurate 2495 gives the best case fill at 100 %, and 40 of the 40 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 155.0 gr projectile in 0.311" 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, SNPE Vectan SP 10, ADI AR 2219 rank at the top here: for .308 Marlin Express with the .311 | 155gr | Frontier FBSP 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.