Load Specifications
Load data in caliber .308 Marlin Express with .308 | 150gr | Swift A-Frame bullet and 45 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Lovex D073.6 and Shooters World Match Rifle.
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% | 42,395 psi | 89% | 2516 fps | 99.7% |
| Accurate 2460 | <<locked>> | 88% | 40,698 psi | 85% | 2507 fps | 97.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,366 psi | 89% | 2585 fps | 99.9% |
| Accurate 2520 | <<locked>> | 92% | 40,408 psi | 84% | 2543 fps | 97% |
| Accurate 4064ᴾ | <<locked>> | 100% | 39,378 psi | 82% | 2552 fps | 98% |
| Accurate LT-30 | <<locked>> | 84% | 42,743 psi | 89% | 2438 fps | 98.9% |
| Accurate LT-32 | <<locked>> | 84% | 43,207 psi | 90% | 2448 fps | 97.5% |
| ADI AR 2207 | <<locked>> | 82% | 42,612 psi | 89% | 2484 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 43,047 psi | 90% | 2569 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 94% | 41,655 psi | 87% | 2585 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 88% | 43,163 psi | 90% | 2539 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 41,162 psi | 86% | 2431 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 90% | 41,945 psi | 88% | 2477 fps | 96% |
| Hodgdon BL-C2 | <<locked>> | 94% | 41,307 psi | 86% | 2575 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 88% | 42,018 psi | 88% | 2549 fps | 98.8% |
| Hodgdon H335 | <<locked>> | 88% | 42,380 psi | 89% | 2562 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,474 psi | 68% | 1588 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 42,076 psi | 88% | 2612 fps | 99.4% |
| IMR 4198 | <<locked>> | 86% | 42,250 psi | 88% | 2477 fps | 100% |
| Lovex D073.4 | <<locked>> | 82% | 40,756 psi | 85% | 2510 fps | 96.8% |
| Lovex D073.5 | <<locked>> | 90% | 43,192 psi | 90% | 2552 fps | 96.7% |
| Lovex D073.6 | <<locked>> | 96% | 41,118 psi | 86% | 2569 fps | 97.2% |
| Lovex S062ᴾ | <<locked>> | 100% | 43,076 psi | 90% | 2562 fps | 95.8% |
| Norma 200 | <<locked>> | 84% | 43,004 psi | 90% | 2516 fps | 100% |
| Norma 201 | <<locked>> | 96% | 43,250 psi | 90% | 2549 fps | 95.8% |
| Norma 202 | <<locked>> | 96% | 42,946 psi | 90% | 2572 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,518 psi | 68% | 1627 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 41,669 psi | 87% | 2520 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 92% | 41,814 psi | 87% | 2513 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 98% | 43,279 psi | 90% | 2543 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 82% | 40,756 psi | 85% | 2510 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 96% | 41,118 psi | 86% | 2569 fps | 97.2% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 43,076 psi | 90% | 2562 fps | 95.8% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 40,785 psi | 85% | 2523 fps | 97.6% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 41,263 psi | 86% | 2500 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 41,060 psi | 86% | 2444 fps | 97.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,843 psi | 87% | 2477 fps | 98.7% |
| Somchem S335 | <<locked>> | 94% | 42,250 psi | 88% | 2490 fps | 98.6% |
| Vihtavuori N120 | <<locked>> | 82% | 42,728 psi | 89% | 2444 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 41,379 psi | 86% | 2454 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 94% | 42,801 psi | 89% | 2493 fps | 99.7% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 43,236 psi | 90% | 2585 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 98% | 43,221 psi | 90% | 2552 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 98% | 41,713 psi | 87% | 2543 fps | 97.7% |
| Winchester 748 | <<locked>> | 94% | 42,627 psi | 89% | 2595 fps | 96.5% |
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% | 29,037 psi | 61% | 2238 fps | 97% |
| Accurate 2460 | <<locked>> | 82% | 33,156 psi | 69% | 2352 fps | 95.2% |
| Accurate 2495 | <<locked>> | 84% | 24,758 psi | 52% | 2201 fps | 95.7% |
| Accurate 2520 | <<locked>> | 88% | 35,230 psi | 74% | 2441 fps | 95.5% |
| Accurate 4064 | <<locked>> | 92% | 30,371 psi | 63% | 2359 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 38,043 psi | 79% | 2349 fps | 98.1% |
| Accurate LT-32 | <<locked>> | 80% | 38,435 psi | 80% | 2356 fps | 96.3% |
| ADI AR 2207 | <<locked>> | 80% | 39,914 psi | 83% | 2438 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 35,259 psi | 74% | 2415 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 80% | 26,731 psi | 56% | 2254 fps | 98.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,562 psi | 70% | 2356 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,042 psi | 75% | 2336 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 39,523 psi | 83% | 2431 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 92% | 38,551 psi | 81% | 2523 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 32,271 psi | 67% | 2346 fps | 96.3% |
| Hodgdon H335 | <<locked>> | 80% | 32,590 psi | 68% | 2359 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,004 psi | 50% | 1417 fps | 100% |
| IMR 3031 | 32.8 gr | 84% | 28,906 psi | 60% | 2316 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 35,375 psi | 74% | 2349 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 80% | 38,189 psi | 80% | 2461 fps | 96.1% |
| Lovex D073.5 | <<locked>> | 86% | 37,811 psi | 79% | 2451 fps | 95.3% |
| Lovex D073.6 | 38.3 gr | 92% | 35,839 psi | 75% | 2464 fps | 95.7% |
| Lovex S062 | <<locked>> | 98% | 40,756 psi | 85% | 2523 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 38,159 psi | 80% | 2431 fps | 99.9% |
| Norma 201 | <<locked>> | 94% | 40,582 psi | 85% | 2500 fps | 95% |
| Norma 202 | <<locked>> | 88% | 33,315 psi | 70% | 2379 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,917 psi | 50% | 1450 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 36,521 psi | 76% | 2418 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 84% | 33,228 psi | 69% | 2336 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 96% | 40,625 psi | 85% | 2493 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 38,189 psi | 80% | 2461 fps | 96.1% |
| Shooters World Match Rifle | 38.3 gr | 92% | 35,839 psi | 75% | 2464 fps | 95.7% |
| Shooters World Precision | <<locked>> | 98% | 40,756 psi | 85% | 2523 fps | 95.1% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 35,752 psi | 75% | 2421 fps | 96.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,200 psi | 71% | 2359 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 34,156 psi | 71% | 2306 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 29,327 psi | 61% | 2215 fps | 95% |
| Somchem S335 | <<locked>> | 84% | 31,125 psi | 65% | 2264 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 40,045 psi | 84% | 2402 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,329 psi | 68% | 2277 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 80% | 28,108 psi | 59% | 2188 fps | 96.4% |
| Vihtavuori N135 | <<locked>> | 82% | 24,947 psi | 52% | 2178 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 88% | 31,676 psi | 66% | 2316 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 92% | 34,418 psi | 72% | 2395 fps | 95.7% |
| Winchester 748 | <<locked>> | 92% | 39,827 psi | 83% | 2543 fps | 95.7% |
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 45 powders for .308 Marlin Express loaded with the .308 | 150gr | Swift A-Frame. IMR 3031 delivers the highest muzzle velocity at 2,612 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,612 fps. Accurate 2495 gives the best case fill at 100 %, and 45 of the 45 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 150.0 gr projectile in 0.308" calls for a 1:16.0 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. IMR 3031, Lovex D073.6, Shooters World Match Rifle rank at the top here: for .308 Marlin Express with the .308 | 150gr | Swift A-Frame 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.