Load Specifications
Load data in caliber .308 Marlin Express with .308 | 150gr | RWS TMR 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, Alliant AR-Comp and Lovex D073.6.
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>> | 90% | 41,075 psi | 86% | 2503 fps | 99.7% |
| Accurate 2460 | <<locked>> | 88% | 41,887 psi | 88% | 2539 fps | 97.9% |
| Accurate 2495 | <<locked>> | 98% | 40,872 psi | 85% | 2572 fps | 99.8% |
| Accurate 2520 | <<locked>> | 92% | 41,901 psi | 88% | 2582 fps | 97.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 40,915 psi | 85% | 2592 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 82% | 41,176 psi | 86% | 2425 fps | 98.8% |
| Accurate LT-32 | <<locked>> | 82% | 41,553 psi | 87% | 2431 fps | 97.3% |
| ADI AR 2219 | <<locked>> | 84% | 41,292 psi | 86% | 2549 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 92% | 42,714 psi | 89% | 2552 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 94% | 42,917 psi | 90% | 2618 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 41,568 psi | 87% | 2523 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 42,163 psi | 88% | 2464 fps | 99.2% |
| Hodgdon Benchmark | <<locked>> | 90% | 43,062 psi | 90% | 2513 fps | 96.5% |
| Hodgdon BL-C2 | <<locked>> | 94% | 42,656 psi | 89% | 2615 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 88% | 42,917 psi | 90% | 2579 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 86% | 40,988 psi | 86% | 2549 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,735 psi | 68% | 1604 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 40,654 psi | 85% | 2598 fps | 99.3% |
| IMR 4198 | <<locked>> | 86% | 43,018 psi | 90% | 2503 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 42,714 psi | 89% | 2552 fps | 95.8% |
| Lovex D073.4 | <<locked>> | 82% | 42,076 psi | 88% | 2546 fps | 97.3% |
| Lovex D073.5 | <<locked>> | 88% | 41,640 psi | 87% | 2536 fps | 96.6% |
| Lovex D073.6 | <<locked>> | 96% | 42,583 psi | 89% | 2605 fps | 97.7% |
| Lovex S062 | <<locked>> | 98% | 41,814 psi | 87% | 2556 fps | 95.7% |
| Norma 200 | <<locked>> | 82% | 41,539 psi | 87% | 2503 fps | 100% |
| Norma 202 | <<locked>> | 94% | 41,466 psi | 87% | 2559 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,779 psi | 68% | 1644 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 42,830 psi | 89% | 2556 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 92% | 43,105 psi | 90% | 2549 fps | 98.1% |
| Shooters World AR Plus | <<locked>> | 82% | 42,076 psi | 88% | 2546 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 96% | 42,583 psi | 89% | 2605 fps | 97.7% |
| Shooters World Precision | <<locked>> | 98% | 41,814 psi | 87% | 2556 fps | 95.7% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 41,945 psi | 88% | 2556 fps | 98% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 42,380 psi | 89% | 2533 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 42,235 psi | 88% | 2477 fps | 98% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 43,207 psi | 90% | 2513 fps | 99% |
| Somchem S321 | <<locked>> | 90% | 42,960 psi | 90% | 2582 fps | 96.2% |
| Somchem S335 | <<locked>> | 92% | 40,828 psi | 85% | 2477 fps | 98.6% |
| Vihtavuori N130 | <<locked>> | 88% | 42,322 psi | 88% | 2484 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 41,771 psi | 87% | 2487 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 98% | 42,090 psi | 88% | 2575 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 96% | 41,989 psi | 88% | 2543 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 92% | 42,757 psi | 89% | 2546 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 98% | 42,931 psi | 90% | 2575 fps | 98.2% |
| Winchester 748 | <<locked>> | 92% | 41,046 psi | 86% | 2579 fps | 96.3% |
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% | 30,023 psi | 63% | 2274 fps | 97.5% |
| Accurate 2460 | <<locked>> | 80% | 32,010 psi | 67% | 2336 fps | 95% |
| Accurate 2495 | <<locked>> | 82% | 24,033 psi | 50% | 2188 fps | 95.6% |
| Accurate 2520 | <<locked>> | 86% | 34,084 psi | 71% | 2425 fps | 95.3% |
| Accurate 4064 | <<locked>> | 90% | 29,631 psi | 62% | 2349 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 38,725 psi | 81% | 2379 fps | 98.4% |
| Accurate LT-32 | <<locked>> | 80% | 39,102 psi | 82% | 2382 fps | 96.7% |
| ADI AR 2219 | <<locked>> | 80% | 36,172 psi | 76% | 2448 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 90% | 40,248 psi | 84% | 2503 fps | 95% |
| Alliant AR-Comp | 32.2 gr | 80% | 27,601 psi | 58% | 2290 fps | 99% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,693 psi | 72% | 2388 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,028 psi | 77% | 2369 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 38,305 psi | 80% | 2418 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 92% | 39,842 psi | 83% | 2559 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 33,185 psi | 69% | 2379 fps | 96.8% |
| Hodgdon H335 | <<locked>> | 80% | 33,388 psi | 70% | 2388 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,149 psi | 50% | 1430 fps | 100% |
| IMR 3031 | 32.9 gr | 82% | 27,978 psi | 58% | 2303 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 36,216 psi | 76% | 2379 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 40,248 psi | 84% | 2503 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 39,175 psi | 82% | 2493 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 84% | 36,593 psi | 76% | 2438 fps | 95.1% |
| Lovex D073.6 | 38.5 gr | 90% | 34,693 psi | 72% | 2451 fps | 95.5% |
| Lovex S062 | <<locked>> | 96% | 39,320 psi | 82% | 2507 fps | 95% |
| Norma 200 | <<locked>> | 80% | 39,044 psi | 82% | 2457 fps | 100% |
| Norma 202 | <<locked>> | 86% | 32,401 psi | 68% | 2369 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,047 psi | 50% | 1463 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 35,157 psi | 73% | 2402 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 82% | 32,198 psi | 67% | 2320 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 39,175 psi | 82% | 2493 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 34,693 psi | 72% | 2451 fps | 95.5% |
| Shooters World Precision | <<locked>> | 96% | 39,320 psi | 82% | 2507 fps | 95% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,637 psi | 77% | 2451 fps | 96.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,969 psi | 73% | 2388 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 32,938 psi | 69% | 2293 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 30,066 psi | 63% | 2244 fps | 95.6% |
| Somchem S321 | <<locked>> | 88% | 40,451 psi | 85% | 2533 fps | 95.5% |
| Somchem S335 | <<locked>> | 82% | 30,110 psi | 63% | 2247 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 33,069 psi | 69% | 2303 fps | 99% |
| Vihtavuori N133 | <<locked>> | 80% | 28,761 psi | 60% | 2215 fps | 96.9% |
| Vihtavuori N135 | <<locked>> | 80% | 23,975 psi | 50% | 2159 fps | 95% |
| Vihtavuori N140 | <<locked>> | 86% | 30,748 psi | 64% | 2306 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 90% | 40,205 psi | 84% | 2500 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 90% | 33,301 psi | 70% | 2382 fps | 95.5% |
| Winchester 748 | <<locked>> | 90% | 38,667 psi | 81% | 2533 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 78 powders for .308 Marlin Express loaded with the .308 | 150gr | RWS TMR. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,638 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,638 fps. Accurate 4064 gives the best case fill at 100 %, and 78 of the 78 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 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, Alliant Reloder- TS 15.5, Bofors RP3 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, Alliant AR-Comp, Lovex D073.6 rank at the top here: for .308 Marlin Express with the .308 | 150gr | RWS TMR they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, ADI AR 2206H burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.