Load Specifications
Load data in caliber .308 Marlin Express with .307 | 165gr | Rhino Penetrator bullet and 46 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% | 42,366 psi | 89% | 2339 fps | 99.7% |
| Accurate 2460 | <<locked>> | 90% | 40,582 psi | 85% | 2329 fps | 97.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,957 psi | 81% | 2359 fps | 99.6% |
| Accurate 2520 | <<locked>> | 96% | 43,294 psi | 90% | 2415 fps | 97.7% |
| Accurate 4064ᴾ | <<locked>> | 100% | 36,289 psi | 76% | 2326 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 84% | 40,828 psi | 85% | 2228 fps | 98.6% |
| Accurate LT-32 | <<locked>> | 84% | 41,234 psi | 86% | 2231 fps | 97% |
| ADI AR 2207 | <<locked>> | 84% | 43,018 psi | 90% | 2313 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 43,236 psi | 90% | 2392 fps | 99% |
| Alliant AR-Comp | <<locked>> | 96% | 41,727 psi | 87% | 2405 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 43,018 psi | 90% | 2359 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 82% | 41,989 psi | 88% | 2280 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 41,350 psi | 86% | 2264 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 92% | 42,598 psi | 89% | 2310 fps | 96.1% |
| Hodgdon BL-C2 | <<locked>> | 96% | 41,423 psi | 87% | 2398 fps | 96% |
| Hodgdon H322 | <<locked>> | 90% | 42,090 psi | 88% | 2372 fps | 98.8% |
| Hodgdon H335 | <<locked>> | 90% | 42,656 psi | 89% | 2385 fps | 98.1% |
| Hodgdon H4198 | <<locked>> | 82% | 42,322 psi | 88% | 2264 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,300 psi | 67% | 1450 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 42,105 psi | 88% | 2431 fps | 99.4% |
| IMR 4198 | <<locked>> | 88% | 42,482 psi | 89% | 2303 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 41,017 psi | 86% | 2336 fps | 96.9% |
| Lovex D073.5 | <<locked>> | 90% | 40,727 psi | 85% | 2333 fps | 96.1% |
| Lovex D073.6 | <<locked>> | 98% | 40,872 psi | 85% | 2388 fps | 97.1% |
| Norma 200 | <<locked>> | 84% | 40,814 psi | 85% | 2303 fps | 100% |
| Norma 201 | <<locked>> | 98% | 43,149 psi | 90% | 2369 fps | 95.8% |
| Norma 202 | <<locked>> | 98% | 42,801 psi | 89% | 2392 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,082 psi | 67% | 1483 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 42,003 psi | 88% | 2349 fps | 96.9% |
| Rottweil R 901 | <<locked>> | 94% | 41,989 psi | 88% | 2339 fps | 97.8% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 43,236 psi | 90% | 2362 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 84% | 41,017 psi | 86% | 2336 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 98% | 40,872 psi | 85% | 2388 fps | 97.1% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 41,031 psi | 86% | 2349 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 41,307 psi | 86% | 2323 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 41,133 psi | 86% | 2270 fps | 97.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,813 psi | 83% | 2267 fps | 98.3% |
| Somchem S321 | <<locked>> | 92% | 41,887 psi | 88% | 2372 fps | 95.7% |
| Somchem S335 | <<locked>> | 96% | 42,264 psi | 88% | 2313 fps | 98.6% |
| Vihtavuori N120 | <<locked>> | 84% | 43,163 psi | 90% | 2274 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 41,423 psi | 87% | 2280 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 96% | 43,062 psi | 90% | 2320 fps | 99.7% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,712 psi | 85% | 2365 fps | 99.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,250 psi | 90% | 2372 fps | 98.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,466 psi | 87% | 2362 fps | 97.7% |
| Winchester 748 | <<locked>> | 96% | 42,627 psi | 89% | 2411 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>> | 80% | 27,485 psi | 57% | 2047 fps | 96.6% |
| Accurate 2460 | <<locked>> | 84% | 33,272 psi | 70% | 2195 fps | 95.4% |
| Accurate 2495 | <<locked>> | 84% | 22,989 psi | 48% | 2011 fps | 95.1% |
| Accurate 2520 | <<locked>> | 90% | 35,288 psi | 74% | 2274 fps | 95.6% |
| Accurate 4064 | <<locked>> | 94% | 29,863 psi | 62% | 2192 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 36,332 psi | 76% | 2149 fps | 97.7% |
| Accurate LT-32 | <<locked>> | 80% | 36,738 psi | 77% | 2152 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 38,101 psi | 80% | 2238 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,286 psi | 70% | 2201 fps | 96.7% |
| Alliant AR-Comp | 27.3 gr | 80% | 25,324 psi | 53% | 2057 fps | 98.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,749 psi | 66% | 2152 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,392 psi | 82% | 2238 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,403 psi | 72% | 2139 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 90% | 40,118 psi | 84% | 2267 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 94% | 38,595 psi | 81% | 2349 fps | 95.1% |
| Hodgdon H322 | 28.2 gr | 80% | 30,719 psi | 64% | 2146 fps | 95.7% |
| Hodgdon H335 | <<locked>> | 82% | 32,837 psi | 69% | 2198 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 40,103 psi | 84% | 2224 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,743 psi | 50% | 1293 fps | 100% |
| IMR 3031 | 28.6 gr | 84% | 27,296 psi | 57% | 2113 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 33,765 psi | 71% | 2149 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 80% | 35,665 psi | 75% | 2238 fps | 95.4% |
| Lovex D073.5 | <<locked>> | 88% | 37,927 psi | 79% | 2283 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 94% | 35,824 psi | 75% | 2297 fps | 95.8% |
| Norma 200 | <<locked>> | 80% | 35,984 psi | 75% | 2221 fps | 99.8% |
| Norma 201 | <<locked>> | 96% | 40,480 psi | 85% | 2323 fps | 95% |
| Norma 202 | <<locked>> | 90% | 33,301 psi | 70% | 2215 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,685 psi | 49% | 1325 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 36,782 psi | 77% | 2254 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 86% | 33,170 psi | 69% | 2169 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 98% | 40,611 psi | 85% | 2320 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 35,665 psi | 75% | 2238 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 94% | 35,824 psi | 75% | 2297 fps | 95.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 33,489 psi | 70% | 2205 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,460 psi | 68% | 2152 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 32,430 psi | 68% | 2106 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 29,399 psi | 61% | 2060 fps | 95.1% |
| Somchem S321 | <<locked>> | 90% | 39,392 psi | 82% | 2326 fps | 95% |
| Somchem S335 | <<locked>> | 84% | 29,559 psi | 62% | 2070 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 38,290 psi | 80% | 2201 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,734 psi | 64% | 2080 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 26,745 psi | 56% | 1998 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 84% | 24,874 psi | 52% | 2024 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 90% | 31,807 psi | 66% | 2159 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 92% | 32,576 psi | 68% | 2192 fps | 95% |
| Winchester 748 | <<locked>> | 92% | 37,724 psi | 79% | 2323 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 46 powders for .308 Marlin Express loaded with the .307 | 165gr | Rhino Penetrator. IMR 3031 delivers the highest muzzle velocity at 2,431 fps; across all powders the maximum-charge window runs from 1,450 fps to 2,431 fps. Accurate 2495 gives the best case fill at 100 %, and 46 of the 46 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 165.0 gr projectile in 0.307" calls for a 1:11.5 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 .307 | 165gr | Rhino Penetrator 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.