Load Specifications
Load data in caliber .308 Marlin Express with .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC bullet and 41 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% | 42,931 psi | 90% | 2507 fps | 99.6% |
| Accurate 2460 | <<locked>> | 90% | 41,350 psi | 86% | 2500 fps | 97.3% |
| Accurate 2495ᴾ | <<locked>> | 100% | 39,798 psi | 83% | 2526 fps | 99.5% |
| Accurate 2520 | <<locked>> | 94% | 41,176 psi | 86% | 2536 fps | 96.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,028 psi | 77% | 2490 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 84% | 41,234 psi | 86% | 2388 fps | 98.4% |
| Accurate LT-32 | <<locked>> | 84% | 41,684 psi | 87% | 2395 fps | 96.7% |
| ADI AR 2207 | <<locked>> | 82% | 40,930 psi | 86% | 2441 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 41,234 psi | 86% | 2513 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 96% | 41,974 psi | 88% | 2572 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 88% | 41,031 psi | 86% | 2487 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 82% | 42,264 psi | 88% | 2444 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 41,901 psi | 88% | 2425 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 42,975 psi | 90% | 2474 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 90% | 42,656 psi | 89% | 2539 fps | 98.6% |
| Hodgdon H335 | <<locked>> | 90% | 43,221 psi | 90% | 2552 fps | 97.9% |
| Hodgdon H4198 | <<locked>> | 82% | 43,004 psi | 90% | 2431 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,111 psi | 67% | 1562 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 42,815 psi | 89% | 2605 fps | 99.3% |
| IMR 4198 | <<locked>> | 88% | 42,815 psi | 89% | 2467 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 41,611 psi | 87% | 2503 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 90% | 41,321 psi | 86% | 2497 fps | 95.9% |
| Lovex D073.6 | <<locked>> | 98% | 41,669 psi | 87% | 2559 fps | 96.9% |
| Norma 200 | <<locked>> | 84% | 41,162 psi | 86% | 2467 fps | 100% |
| Norma 202 | <<locked>> | 96% | 40,973 psi | 86% | 2516 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,184 psi | 67% | 1604 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 42,337 psi | 88% | 2510 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 94% | 42,598 psi | 89% | 2507 fps | 97.5% |
| Shooters World AR Plus | <<locked>> | 84% | 41,611 psi | 87% | 2503 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 98% | 41,669 psi | 87% | 2559 fps | 96.9% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 41,742 psi | 87% | 2516 fps | 97.5% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 41,872 psi | 87% | 2490 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 41,756 psi | 87% | 2434 fps | 97.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,147 psi | 84% | 2425 fps | 98% |
| Somchem S335 | <<locked>> | 96% | 43,004 psi | 90% | 2480 fps | 98.5% |
| Vihtavuori N120 | <<locked>> | 82% | 41,104 psi | 86% | 2402 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 41,814 psi | 87% | 2444 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 94% | 41,075 psi | 86% | 2441 fps | 99.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 41,147 psi | 86% | 2530 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 98% | 41,176 psi | 86% | 2493 fps | 97.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,467 psi | 89% | 2533 fps | 97.5% |
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% | 27,731 psi | 58% | 2188 fps | 96.2% |
| Accurate 2460 | <<locked>> | 84% | 33,678 psi | 70% | 2346 fps | 95% |
| Accurate 2495 | <<locked>> | 86% | 24,961 psi | 52% | 2195 fps | 95.5% |
| Accurate 2520 | 36.7 gr | 90% | 35,665 psi | 75% | 2428 fps | 95.2% |
| Accurate 4064 | <<locked>> | 96% | 32,634 psi | 68% | 2398 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 36,492 psi | 76% | 2300 fps | 97.4% |
| Accurate LT-32 | <<locked>> | 80% | 36,883 psi | 77% | 2303 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 38,218 psi | 80% | 2395 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,837 psi | 71% | 2362 fps | 96.4% |
| Alliant AR-Comp | 30 gr | 80% | 25,657 psi | 54% | 2201 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,111 psi | 67% | 2306 fps | 98.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,900 psi | 83% | 2402 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,606 psi | 72% | 2287 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 90% | 40,408 psi | 84% | 2425 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 30,908 psi | 65% | 2293 fps | 95.3% |
| Hodgdon H335 | <<locked>> | 82% | 33,199 psi | 69% | 2352 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 40,277 psi | 84% | 2382 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,670 psi | 49% | 1394 fps | 100% |
| IMR 3031 | 32.2 gr | 86% | 29,530 psi | 62% | 2313 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 34,156 psi | 71% | 2303 fps | 99.5% |
| Lovex D073.4 | <<locked>> | 80% | 36,289 psi | 76% | 2402 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 88% | 38,348 psi | 80% | 2441 fps | 95% |
| Lovex D073.6 | <<locked>> | 94% | 36,347 psi | 76% | 2457 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 36,347 psi | 76% | 2379 fps | 99.7% |
| Norma 202 | <<locked>> | 90% | 33,895 psi | 71% | 2375 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,569 psi | 49% | 1427 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 37,202 psi | 78% | 2411 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 88% | 35,737 psi | 75% | 2372 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 36,289 psi | 76% | 2402 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 94% | 36,347 psi | 76% | 2457 fps | 95.4% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,084 psi | 71% | 2365 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,750 psi | 68% | 2306 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 34,722 psi | 73% | 2300 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 31,676 psi | 66% | 2251 fps | 95.6% |
| Somchem S335 | <<locked>> | 86% | 31,821 psi | 66% | 2260 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 38,406 psi | 80% | 2356 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,038 psi | 65% | 2228 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 80% | 26,977 psi | 56% | 2139 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 86% | 26,774 psi | 56% | 2215 fps | 95.9% |
| Vihtavuori N140 | <<locked>> | 90% | 32,300 psi | 67% | 2313 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 94% | 35,070 psi | 73% | 2388 fps | 95.5% |
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 41 powders for .308 Marlin Express loaded with the .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC. IMR 3031 delivers the highest muzzle velocity at 2,605 fps; across all powders the maximum-charge window runs from 1,562 fps to 2,605 fps. Accurate 2495 gives the best case fill at 100 %, and 41 of the 41 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 150.0 gr projectile in 0.308" calls for a 1:14.0 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, Accurate 2520 rank at the top here: for .308 Marlin Express with the .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC 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.