Load Specifications
Load data in caliber .308 Marlin Express with .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC bullet and 37 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% | 41,785 psi | 87% | 2644 fps | 99.1% |
| Accurate 2460 | <<locked>> | 92% | 43,076 psi | 90% | 2687 fps | 96.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,493 psi | 80% | 2661 fps | 98.9% |
| Accurate 2520 | <<locked>> | 96% | 42,844 psi | 90% | 2723 fps | 96.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 35,853 psi | 75% | 2618 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 86% | 42,975 psi | 90% | 2575 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 84% | 40,872 psi | 85% | 2533 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 84% | 42,337 psi | 88% | 2631 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 42,917 psi | 90% | 2707 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 96% | 41,292 psi | 86% | 2723 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 42,815 psi | 89% | 2680 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 82% | 41,524 psi | 87% | 2592 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 41,046 psi | 86% | 2562 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 90% | 41,553 psi | 87% | 2680 fps | 97.8% |
| Hodgdon H335 | <<locked>> | 90% | 42,264 psi | 88% | 2697 fps | 97% |
| Hodgdon H4198 | <<locked>> | 82% | 42,003 psi | 88% | 2572 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,966 psi | 67% | 1680 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 41,582 psi | 87% | 2743 fps | 98.6% |
| IMR 4198 | <<locked>> | 88% | 42,090 psi | 88% | 2621 fps | 100% |
| Lovex D073.6 | <<locked>> | 98% | 40,524 psi | 85% | 2694 fps | 95.8% |
| Norma 200 | <<locked>> | 86% | 42,960 psi | 90% | 2664 fps | 100% |
| Norma 202 | <<locked>> | 98% | 42,380 psi | 89% | 2700 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,923 psi | 67% | 1719 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 41,582 psi | 87% | 2644 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 98% | 40,524 psi | 85% | 2694 fps | 95.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 43,018 psi | 90% | 2395 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 40,756 psi | 85% | 2657 fps | 96.5% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 41,031 psi | 86% | 2638 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 40,814 psi | 85% | 2572 fps | 96.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,465 psi | 82% | 2562 fps | 97.2% |
| Somchem S335 | <<locked>> | 96% | 41,959 psi | 88% | 2618 fps | 97.7% |
| Vihtavuori N120 | <<locked>> | 84% | 42,496 psi | 89% | 2589 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 41,162 psi | 86% | 2589 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 96% | 42,641 psi | 89% | 2628 fps | 99.1% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,234 psi | 84% | 2674 fps | 99.1% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,033 psi | 90% | 2684 fps | 97.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,379 psi | 86% | 2667 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>> | 82% | 28,819 psi | 60% | 2359 fps | 95.7% |
| Accurate 2460 | <<locked>> | 88% | 37,710 psi | 79% | 2582 fps | 95.5% |
| Accurate 2495 | <<locked>> | 90% | 27,630 psi | 58% | 2411 fps | 95.8% |
| Accurate 2520 | <<locked>> | 94% | 39,900 psi | 83% | 2667 fps | 95.7% |
| Accurate 4064 | <<locked>> | 98% | 33,634 psi | 70% | 2569 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 35,766 psi | 75% | 2431 fps | 96.4% |
| Accurate LT-32 | <<locked>> | 82% | 38,450 psi | 80% | 2484 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 37,492 psi | 78% | 2543 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 32,953 psi | 69% | 2487 fps | 95.2% |
| Alliant AR-Comp | 32 gr | 80% | 25,034 psi | 52% | 2316 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,372 psi | 66% | 2438 fps | 97.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,030 psi | 82% | 2543 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,040 psi | 71% | 2418 fps | 96.2% |
| Hodgdon H322 | 34.7 gr | 84% | 34,519 psi | 72% | 2526 fps | 95.8% |
| Hodgdon H335 | <<locked>> | 86% | 37,217 psi | 78% | 2592 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 39,465 psi | 82% | 2520 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,496 psi | 49% | 1499 fps | 100% |
| IMR 3031 | 35.1 gr | 88% | 30,472 psi | 64% | 2484 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 33,272 psi | 70% | 2434 fps | 99% |
| Lovex D073.6 | <<locked>> | 96% | 37,971 psi | 79% | 2641 fps | 95% |
| Norma 200 | <<locked>> | 80% | 35,375 psi | 74% | 2513 fps | 99.3% |
| Norma 202 | <<locked>> | 94% | 37,405 psi | 78% | 2598 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,598 psi | 49% | 1539 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 36,854 psi | 77% | 2546 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 96% | 37,971 psi | 79% | 2641 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,698 psi | 85% | 2359 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 38,101 psi | 80% | 2605 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,068 psi | 67% | 2438 fps | 96% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 36,303 psi | 76% | 2477 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 32,779 psi | 68% | 2418 fps | 95.1% |
| Somchem S335 | <<locked>> | 88% | 32,996 psi | 69% | 2431 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 37,681 psi | 79% | 2503 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,356 psi | 63% | 2356 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 82% | 27,920 psi | 58% | 2300 fps | 95% |
| Vihtavuori N135 | <<locked>> | 88% | 27,746 psi | 58% | 2382 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 94% | 35,563 psi | 74% | 2533 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 96% | 36,405 psi | 76% | 2566 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 37 powders for .308 Marlin Express loaded with the .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC. IMR 3031 delivers the highest muzzle velocity at 2,743 fps; across all powders the maximum-charge window runs from 1,680 fps to 2,743 fps. Accurate 2495 gives the best case fill at 100 %, and 37 of the 37 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 135.0 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. Alliant AR-Comp, IMR 3031, Hodgdon H322 rank at the top here: for .308 Marlin Express with the .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC 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.