Load Specifications
Load data in caliber .308 Marlin Express with .308 | 90gr | Impala LWHV LS bullet and 15 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma 200, IMR 4198 and ADI AR 2207.
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>> | 84% | 41,176 psi | 86% | 3064 fps | 96.4% |
| ADI AR 2207 | <<locked>> | 90% | 42,757 psi | 89% | 3215 fps | 99.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 39,102 psi | 82% | 3189 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 96% | 42,830 psi | 89% | 3232 fps | 97% |
| Alliant Reloder-7 | <<locked>> | 88% | 42,786 psi | 89% | 3156 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,995 psi | 65% | 2073 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 42,670 psi | 89% | 3176 fps | 97.8% |
| IMR 4227 | <<locked>> | 82% | 41,321 psi | 86% | 3084 fps | 98.7% |
| Lovex S053 | <<locked>> | 84% | 42,830 psi | 89% | 3110 fps | 100% |
| Norma 200 | <<locked>> | 90% | 41,365 psi | 86% | 3176 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,777 psi | 64% | 2119 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 43,236 psi | 90% | 3169 fps | 98.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 42,032 psi | 88% | 2946 fps | 100% |
| Vihtavuori N120 | <<locked>> | 90% | 42,888 psi | 90% | 3173 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 41,597 psi | 87% | 3123 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 1680 | <<locked>> | 82% | 38,827 psi | 81% | 3009 fps | 95.7% |
| ADI AR 2207 | 33.4 gr | 80% | 32,010 psi | 67% | 2946 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 96% | 34,693 psi | 72% | 3068 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 90% | 36,114 psi | 75% | 3064 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 82% | 35,897 psi | 75% | 2986 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,989 psi | 48% | 1857 fps | 100% |
| IMR 4198 | 34.4 gr | 86% | 34,389 psi | 72% | 2959 fps | 95.2% |
| IMR 4227 | <<locked>> | 80% | 39,015 psi | 82% | 3031 fps | 98.2% |
| Lovex S053 | <<locked>> | 80% | 38,348 psi | 80% | 3012 fps | 99.9% |
| Norma 200 | 36.7 gr | 84% | 34,722 psi | 73% | 3009 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,989 psi | 48% | 1906 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 38,232 psi | 80% | 3051 fps | 97.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,042 psi | 75% | 2825 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 32,140 psi | 67% | 2917 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 94% | 39,349 psi | 82% | 3071 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 30 powders for .308 Marlin Express loaded with the .308 | 90gr | Impala LWHV LS. Alliant Reloder-10x delivers the highest muzzle velocity at 3,232 fps; across all powders the maximum-charge window runs from 2,073 fps to 3,232 fps. Accurate 2015 gives the best case fill at 100 %, and 30 of the 30 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 64–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2495, Alliant AR-Comp 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. Norma 200, IMR 4198, ADI AR 2207 rank at the top here: for .308 Marlin Express with the .308 | 90gr | Impala LWHV LS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2495, Accurate LT-30, ADI AR 2219 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.