Load Specifications
Load data in caliber .308 Marlin Express with .308 | 125gr | Remington PSP bullet and 27 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H322, Alliant Reloder-10x 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 1680 | <<locked>> | 82% | 42,105 psi | 88% | 2661 fps | 99.2% |
| Accurate 2015 | <<locked>> | 96% | 41,452 psi | 87% | 2733 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 34,824 psi | 73% | 2677 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 88% | 43,294 psi | 90% | 2671 fps | 97.4% |
| ADI AR 2207 | <<locked>> | 86% | 42,250 psi | 88% | 2733 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 42,801 psi | 89% | 2795 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 98% | 40,640 psi | 85% | 2805 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 92% | 42,264 psi | 88% | 2769 fps | 99.3% |
| Alliant Reloder-7 | <<locked>> | 84% | 41,220 psi | 86% | 2684 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 41,321 psi | 86% | 2657 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 92% | 41,466 psi | 87% | 2766 fps | 96.8% |
| Hodgdon H335 | <<locked>> | 92% | 42,119 psi | 88% | 2779 fps | 95.9% |
| Hodgdon H4198 | <<locked>> | 84% | 42,293 psi | 88% | 2667 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,647 psi | 66% | 1742 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 40,988 psi | 86% | 2822 fps | 97.6% |
| IMR 4198 | <<locked>> | 90% | 41,945 psi | 88% | 2713 fps | 99.7% |
| Norma 200 | <<locked>> | 88% | 42,380 psi | 89% | 2753 fps | 99.7% |
| Norma 202ᴾ | <<locked>> | 100% | 41,974 psi | 88% | 2782 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,212 psi | 65% | 1778 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 43,221 psi | 90% | 2500 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 43,279 psi | 90% | 2772 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 43,163 psi | 90% | 2700 fps | 96% |
| Somchem S335 | <<locked>> | 98% | 41,394 psi | 86% | 2697 fps | 96.7% |
| Vihtavuori N120 | <<locked>> | 86% | 42,438 psi | 89% | 2694 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 40,799 psi | 85% | 2677 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 98% | 42,264 psi | 88% | 2713 fps | 98.4% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 37,072 psi | 77% | 2700 fps | 97.7% |
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 1680 | <<locked>> | 80% | 39,276 psi | 82% | 2605 fps | 98.7% |
| Accurate 2015 | <<locked>> | 86% | 30,153 psi | 63% | 2480 fps | 95.2% |
| Accurate 2495 | <<locked>> | 94% | 28,471 psi | 59% | 2523 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 82% | 36,042 psi | 75% | 2520 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 35,085 psi | 73% | 2592 fps | 99.9% |
| ADI AR 2219 | <<locked>> | 86% | 37,507 psi | 78% | 2684 fps | 95.6% |
| Alliant AR-Comp | 33.4 gr | 84% | 26,281 psi | 55% | 2434 fps | 95.9% |
| Alliant Reloder-10x | 31 gr | 80% | 29,008 psi | 61% | 2464 fps | 96% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,405 psi | 76% | 2582 fps | 98.7% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 33,982 psi | 71% | 2500 fps | 95.1% |
| Hodgdon H322 | 36.2 gr | 88% | 36,637 psi | 77% | 2664 fps | 95.3% |
| Hodgdon H335 | <<locked>> | 90% | 39,610 psi | 83% | 2730 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 37,376 psi | 78% | 2562 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,192 psi | 48% | 1555 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 34,258 psi | 72% | 2667 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 31,401 psi | 66% | 2477 fps | 97.7% |
| Norma 200 | <<locked>> | 80% | 32,938 psi | 69% | 2552 fps | 98.1% |
| Norma 202 | <<locked>> | 98% | 39,450 psi | 82% | 2733 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,974 psi | 48% | 1588 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,653 psi | 81% | 2425 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 33,852 psi | 71% | 2569 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 40,495 psi | 85% | 2651 fps | 95.3% |
| Somchem S335 | <<locked>> | 94% | 36,680 psi | 77% | 2602 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 35,288 psi | 74% | 2556 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,224 psi | 59% | 2385 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 88% | 31,285 psi | 65% | 2470 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 94% | 30,908 psi | 65% | 2552 fps | 95.6% |
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 27 powders for .308 Marlin Express loaded with the .308 | 125gr | Remington PSP. IMR 3031 delivers the highest muzzle velocity at 2,822 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,822 fps. Accurate 2495 gives the best case fill at 100 %, and 27 of the 27 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Hodgdon TrailBoss, IMR 3031 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. Hodgdon H322, Alliant Reloder-10x, Alliant AR-Comp rank at the top here: for .308 Marlin Express with the .308 | 125gr | Remington PSP 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.