Load Specifications
Load data in caliber .308 Marlin Express with .308 | 200gr | Speer Grand Slam bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon LEVERevolution and SNPE Vectan SP 11.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 41,930 psi | 88% | 2129 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 42,931 psi | 90% | 2178 fps | 99.7% |
| Accurate 2495 | <<locked>> | 94% | 43,250 psi | 90% | 2211 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 43,294 psi | 90% | 2221 fps | 99.6% |
| Accurate 4064 | <<locked>> | 96% | 43,004 psi | 90% | 2234 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 88% | 41,133 psi | 86% | 2178 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 94% | 41,974 psi | 88% | 2172 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 40,756 psi | 85% | 2146 fps | 98% |
| Alliant AR-Comp | <<locked>> | 88% | 41,495 psi | 87% | 2192 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 41,046 psi | 86% | 2218 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 42,728 psi | 89% | 2231 fps | 98.2% |
| Alliant Reloder-10x | <<locked>> | 82% | 42,467 psi | 89% | 2142 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 41,263 psi | 86% | 2201 fps | 96.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 43,018 psi | 90% | 2297 fps | 97.5% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 42,772 psi | 89% | 2221 fps | 96% |
| Bofors RP3 | <<locked>> | 96% | 42,264 psi | 88% | 2234 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 40,872 psi | 85% | 2110 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 88% | 40,828 psi | 85% | 2205 fps | 98.6% |
| Hodgdon CFE223 | <<locked>> | 86% | 42,685 psi | 89% | 2270 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 82% | 40,988 psi | 86% | 2159 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 82% | 41,669 psi | 87% | 2178 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 88% | 41,350 psi | 86% | 2188 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 41,829 psi | 87% | 2241 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,634 psi | 70% | 1352 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 42,511 psi | 89% | 2192 fps | 97.7% |
| IMR 3031 | <<locked>> | 90% | 42,235 psi | 88% | 2231 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 41,539 psi | 87% | 2162 fps | 96.4% |
| IMR 4895 | <<locked>> | 92% | 42,163 psi | 88% | 2228 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 86% | 40,756 psi | 85% | 2146 fps | 98% |
| Lovex D073.5 | <<locked>> | 84% | 42,641 psi | 89% | 2178 fps | 99% |
| Lovex D073.6 | <<locked>> | 90% | 41,495 psi | 87% | 2205 fps | 99.4% |
| Lovex S060 | <<locked>> | 88% | 42,496 psi | 89% | 2133 fps | 97.1% |
| Lovex S062 | <<locked>> | 94% | 43,250 psi | 90% | 2205 fps | 98.6% |
| Norma 201 | <<locked>> | 90% | 42,728 psi | 89% | 2182 fps | 98.5% |
| Norma 202 | <<locked>> | 90% | 42,714 psi | 89% | 2195 fps | 99.8% |
| Norma 203B | <<locked>> | 94% | 42,888 psi | 90% | 2231 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 94% | 42,931 psi | 90% | 2244 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 88% | 42,467 psi | 89% | 2211 fps | 97.1% |
| Ramshot X-Terminator | <<locked>> | 84% | 41,887 psi | 88% | 2146 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,968 psi | 71% | 1388 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 43,279 psi | 90% | 2185 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 42,743 psi | 89% | 2283 fps | 96.7% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 43,062 psi | 90% | 2310 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 86% | 41,553 psi | 87% | 2142 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 92% | 43,236 psi | 90% | 2182 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 98% | 41,785 psi | 87% | 2221 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 41,495 psi | 87% | 2205 fps | 99.4% |
| Shooters World Precision | <<locked>> | 94% | 43,250 psi | 90% | 2205 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 41,727 psi | 87% | 2234 fps | 96.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 43,294 psi | 90% | 2152 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 41,989 psi | 88% | 2192 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 42,641 psi | 89% | 2116 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 41,394 psi | 86% | 2113 fps | 99.9% |
| Somchem S321 | <<locked>> | 84% | 40,944 psi | 86% | 2175 fps | 98.3% |
| Somchem S335 | <<locked>> | 88% | 41,756 psi | 87% | 2119 fps | 99.9% |
| Somchem S341 | <<locked>> | 88% | 40,741 psi | 85% | 2162 fps | 96.6% |
| Somchem S355 | <<locked>> | 98% | 43,221 psi | 90% | 2228 fps | 97.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 33,098 psi | 69% | 2116 fps | 96% |
| Vihtavuori N130 | <<locked>> | 84% | 42,931 psi | 90% | 2106 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 42,409 psi | 89% | 2113 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 41,263 psi | 86% | 2169 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 42,888 psi | 90% | 2178 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 98% | 41,481 psi | 87% | 2175 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 86% | 40,872 psi | 85% | 2146 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 92% | 41,176 psi | 86% | 2172 fps | 99.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 40,857 psi | 85% | 2162 fps | 96.8% |
| Winchester 748 | <<locked>> | 88% | 41,785 psi | 87% | 2221 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 90% | 41,220 psi | 86% | 2198 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% | 34,983 psi | 73% | 2021 fps | 99.9% |
| Accurate 2460 | <<locked>> | 80% | 37,492 psi | 78% | 2090 fps | 99.1% |
| Accurate 2495 | <<locked>> | 80% | 27,282 psi | 57% | 1932 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 32,866 psi | 69% | 2044 fps | 97.8% |
| Accurate 4064 | <<locked>> | 80% | 25,875 psi | 54% | 1913 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 84% | 36,332 psi | 76% | 2093 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 92% | 39,610 psi | 83% | 2133 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 33,997 psi | 71% | 2024 fps | 96.2% |
| Alliant AR-Comp | <<locked>> | 80% | 32,068 psi | 67% | 2037 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 38,609 psi | 81% | 2175 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 31,299 psi | 65% | 2021 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,987 psi | 84% | 2106 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 38,566 psi | 81% | 2156 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 35,665 psi | 75% | 2159 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 40,089 psi | 84% | 2175 fps | 95.2% |
| Bofors RP3 | <<locked>> | 88% | 32,561 psi | 68% | 2064 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,187 psi | 76% | 2028 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,430 psi | 66% | 2031 fps | 96.1% |
| Hodgdon CFE223 | <<locked>> | 82% | 37,144 psi | 78% | 2169 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 38,537 psi | 81% | 2119 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 38,972 psi | 81% | 2136 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 82% | 34,127 psi | 71% | 2057 fps | 95.5% |
| Hodgdon LEVERevolution | 32.9 gr | 84% | 32,561 psi | 68% | 2067 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,976 psi | 52% | 1204 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 33,185 psi | 69% | 2021 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 30,748 psi | 64% | 2028 fps | 99.3% |
| IMR 4064 | <<locked>> | 88% | 36,651 psi | 77% | 2077 fps | 95% |
| IMR 4895 | <<locked>> | 86% | 34,766 psi | 73% | 2096 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 33,997 psi | 71% | 2024 fps | 96.2% |
| Lovex D073.5 | <<locked>> | 80% | 37,289 psi | 78% | 2090 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 80% | 29,588 psi | 62% | 1988 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 35,520 psi | 74% | 2011 fps | 95.2% |
| Lovex S062 | <<locked>> | 84% | 31,734 psi | 66% | 1998 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 31,386 psi | 66% | 1975 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 31,198 psi | 65% | 1991 fps | 97.9% |
| Norma 203B | <<locked>> | 88% | 35,679 psi | 75% | 2106 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 90% | 37,768 psi | 79% | 2156 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 37,260 psi | 78% | 2123 fps | 95.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 36,912 psi | 77% | 2060 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,092 psi | 52% | 1237 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,203 psi | 80% | 2100 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 37,623 psi | 79% | 2192 fps | 95.2% |
| ReloadSwiss RS 60 | 33.8 gr | 86% | 29,515 psi | 62% | 2028 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 34,983 psi | 73% | 2028 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 82% | 31,720 psi | 66% | 1975 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 90% | 32,460 psi | 68% | 2054 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,588 psi | 62% | 1988 fps | 96.8% |
| Shooters World Precision | <<locked>> | 84% | 31,734 psi | 66% | 1998 fps | 95.6% |
| SNPE Vectan SP 11 | 35.6 gr | 92% | 36,724 psi | 77% | 2142 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,712 psi | 85% | 2116 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 37,144 psi | 78% | 2110 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,489 psi | 70% | 1962 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,151 psi | 57% | 1854 fps | 97.5% |
| Somchem S321 | <<locked>> | 80% | 35,911 psi | 75% | 2087 fps | 97.2% |
| Somchem S335 | <<locked>> | 80% | 32,619 psi | 68% | 1962 fps | 98.8% |
| Somchem S341 | <<locked>> | 84% | 35,737 psi | 75% | 2077 fps | 95.1% |
| Somchem S355 | <<locked>> | 90% | 33,866 psi | 71% | 2064 fps | 95.4% |
| Somchem S365 | <<locked>> | 98% | 31,024 psi | 65% | 2070 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 38,130 psi | 80% | 2034 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,388 psi | 70% | 1969 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 28,369 psi | 59% | 1942 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 29,588 psi | 62% | 1942 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 88% | 30,284 psi | 63% | 1975 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 33,576 psi | 70% | 2018 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 80% | 28,137 psi | 59% | 1926 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 35,969 psi | 75% | 2073 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 32,285 psi | 67% | 2047 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 33,837 psi | 71% | 2067 fps | 95.4% |
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 68 powders for .308 Marlin Express loaded with the .308 | 200gr | Speer Grand Slam. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,310 fps; across all powders the maximum-charge window runs from 1,352 fps to 2,310 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 68 of the 68 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 200.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon TrailBoss, ReloadSwiss RS 14 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. ReloadSwiss RS 60, Hodgdon LEVERevolution, SNPE Vectan SP 11 rank at the top here: for .308 Marlin Express with the .308 | 200gr | Speer Grand Slam 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.