Load Specifications
Load data in caliber .308 Marlin Express with .308 | 170gr | Hornady InterLock FP bullet and 53 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Winchester 748 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>> | 90% | 42,192 psi | 88% | 2336 fps | 100% |
| Accurate 2460 | <<locked>> | 88% | 43,076 psi | 90% | 2375 fps | 98.8% |
| Accurate 2495 | <<locked>> | 98% | 42,192 psi | 88% | 2405 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 42,888 psi | 90% | 2411 fps | 98.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 42,090 psi | 88% | 2425 fps | 99.2% |
| Accurate LT-30 | <<locked>> | 82% | 41,916 psi | 88% | 2254 fps | 99.4% |
| Accurate LT-32 | <<locked>> | 82% | 42,366 psi | 89% | 2264 fps | 98.2% |
| ADI AR 2219 | <<locked>> | 84% | 42,380 psi | 89% | 2382 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 90% | 41,321 psi | 86% | 2343 fps | 96.3% |
| Alliant AR-Comp | <<locked>> | 92% | 41,394 psi | 86% | 2398 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 41,089 psi | 86% | 2415 fps | 95.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 42,409 psi | 89% | 2418 fps | 96.4% |
| Alliant Reloder-10x | <<locked>> | 86% | 42,844 psi | 90% | 2352 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 42,873 psi | 90% | 2293 fps | 99.7% |
| Bofors RP3ᴾ | <<locked>> | 100% | 41,611 psi | 87% | 2418 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 88% | 41,597 psi | 87% | 2303 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 92% | 40,843 psi | 85% | 2398 fps | 97% |
| Hodgdon H322 | <<locked>> | 86% | 41,321 psi | 86% | 2362 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 86% | 41,989 psi | 88% | 2382 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 42,148 psi | 88% | 2431 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,953 psi | 69% | 1470 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 43,076 psi | 90% | 2385 fps | 95.9% |
| IMR 3031 | <<locked>> | 94% | 41,959 psi | 88% | 2431 fps | 99.8% |
| IMR 4198 | <<locked>> | 84% | 41,568 psi | 87% | 2290 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 41,321 psi | 86% | 2343 fps | 96.3% |
| Lovex D073.5 | <<locked>> | 88% | 43,018 psi | 90% | 2375 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 94% | 41,017 psi | 86% | 2395 fps | 98.1% |
| Lovex S062 | <<locked>> | 98% | 42,917 psi | 90% | 2392 fps | 96.9% |
| Norma 200 | <<locked>> | 82% | 42,612 psi | 89% | 2329 fps | 100% |
| Norma 201 | <<locked>> | 94% | 42,743 psi | 89% | 2372 fps | 96.8% |
| Norma 202 | <<locked>> | 94% | 42,569 psi | 89% | 2392 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,127 psi | 69% | 1509 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 41,176 psi | 86% | 2343 fps | 97.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 40,973 psi | 86% | 2444 fps | 97.2% |
| Rottweil R 901 | <<locked>> | 90% | 41,539 psi | 87% | 2336 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 96% | 42,844 psi | 90% | 2365 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 94% | 41,017 psi | 86% | 2395 fps | 98.1% |
| Shooters World Precision | <<locked>> | 98% | 42,917 psi | 90% | 2392 fps | 96.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 41,278 psi | 86% | 2303 fps | 95.8% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 43,091 psi | 90% | 2388 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 43,308 psi | 90% | 2356 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 43,062 psi | 90% | 2310 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 41,640 psi | 87% | 2303 fps | 99.3% |
| Somchem S321 | <<locked>> | 88% | 41,408 psi | 87% | 2372 fps | 96.8% |
| Somchem S335 | <<locked>> | 92% | 41,945 psi | 88% | 2313 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 86% | 40,611 psi | 85% | 2267 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 42,569 psi | 89% | 2313 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 96% | 40,799 psi | 85% | 2365 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 43,033 psi | 90% | 2375 fps | 99.2% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 38,914 psi | 81% | 2320 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 90% | 41,046 psi | 86% | 2336 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 96% | 41,408 psi | 87% | 2365 fps | 98.6% |
| Winchester 748 | <<locked>> | 92% | 42,221 psi | 88% | 2418 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% | 30,850 psi | 64% | 2123 fps | 98.5% |
| Accurate 2460 | <<locked>> | 80% | 33,011 psi | 69% | 2188 fps | 96.4% |
| Accurate 2495 | <<locked>> | 80% | 23,438 psi | 49% | 2014 fps | 96.4% |
| Accurate 2520 | 33.1 gr | 82% | 30,530 psi | 64% | 2175 fps | 95% |
| Accurate 4064 | <<locked>> | 86% | 26,876 psi | 56% | 2116 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 39,610 psi | 83% | 2215 fps | 99.1% |
| Accurate LT-32 | <<locked>> | 80% | 39,958 psi | 83% | 2221 fps | 97.7% |
| ADI AR 2219 | <<locked>> | 80% | 37,043 psi | 77% | 2287 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 38,754 psi | 81% | 2297 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 28,152 psi | 59% | 2136 fps | 99.6% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 38,696 psi | 81% | 2369 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 39,726 psi | 83% | 2369 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 35,491 psi | 74% | 2224 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,884 psi | 79% | 2211 fps | 99.1% |
| Bofors RP3 | <<locked>> | 98% | 38,783 psi | 81% | 2369 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 36,912 psi | 77% | 2218 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 88% | 35,781 psi | 75% | 2303 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 34,055 psi | 71% | 2224 fps | 98% |
| Hodgdon H335 | <<locked>> | 80% | 34,229 psi | 72% | 2234 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 39,566 psi | 83% | 2382 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,279 psi | 51% | 1312 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 40,408 psi | 84% | 2339 fps | 95.1% |
| IMR 3031 | 29.6 gr | 80% | 27,035 psi | 56% | 2113 fps | 96.4% |
| IMR 4198 | <<locked>> | 80% | 37,159 psi | 78% | 2215 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 38,754 psi | 81% | 2297 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 82% | 34,954 psi | 73% | 2231 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 86% | 31,169 psi | 65% | 2201 fps | 95.3% |
| Lovex S062 | <<locked>> | 94% | 37,956 psi | 79% | 2303 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 40,219 psi | 84% | 2290 fps | 100% |
| Norma 201 | <<locked>> | 90% | 37,811 psi | 79% | 2283 fps | 95.5% |
| Norma 202 | <<locked>> | 82% | 29,254 psi | 61% | 2126 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,265 psi | 51% | 1342 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 33,808 psi | 71% | 2198 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 36,100 psi | 75% | 2339 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 31,038 psi | 65% | 2123 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 92% | 38,203 psi | 80% | 2283 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 31,169 psi | 65% | 2201 fps | 95.3% |
| Shooters World Precision | <<locked>> | 94% | 37,956 psi | 79% | 2303 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 38,624 psi | 81% | 2257 fps | 95% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 37,536 psi | 78% | 2290 fps | 97.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,129 psi | 75% | 2231 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 29,921 psi | 63% | 2057 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 27,224 psi | 57% | 2014 fps | 95.5% |
| Somchem S321 | <<locked>> | 84% | 36,071 psi | 75% | 2270 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 29,182 psi | 61% | 2064 fps | 96.2% |
| Vihtavuori N130 | <<locked>> | 80% | 34,084 psi | 71% | 2152 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 29,660 psi | 62% | 2073 fps | 98% |
| Vihtavuori N135 | <<locked>> | 80% | 24,787 psi | 52% | 2028 fps | 96.6% |
| Vihtavuori N140 | <<locked>> | 82% | 27,862 psi | 58% | 2070 fps | 95% |
| Vihtavuori N150 | <<locked>> | 98% | 36,434 psi | 76% | 2270 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 88% | 38,740 psi | 81% | 2293 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 86% | 30,226 psi | 63% | 2146 fps | 95.4% |
| Winchester 748 | 34.5 gr | 86% | 34,751 psi | 73% | 2274 fps | 95.3% |
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 53 powders for .308 Marlin Express loaded with the .308 | 170gr | Hornady InterLock FP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,444 fps; across all powders the maximum-charge window runs from 1,470 fps to 2,444 fps. Accurate 4064 gives the best case fill at 100 %, and 53 of the 53 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 170.0 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, Winchester 748, Accurate 2520 rank at the top here: for .308 Marlin Express with the .308 | 170gr | Hornady InterLock FP 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.