Load Specifications
Load data in caliber .308 Marlin Express with .300 | 220gr | Berry's Spire Point bullet and 69 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 52 and Alliant Reloder-17.
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>> | 86% | 43,105 psi | 90% | 2014 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 40,901 psi | 85% | 2018 fps | 99.8% |
| Accurate 2495 | <<locked>> | 92% | 41,553 psi | 87% | 2054 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 41,611 psi | 87% | 2064 fps | 99.7% |
| Accurate 4064 | <<locked>> | 94% | 41,495 psi | 87% | 2080 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 41,974 psi | 88% | 2064 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 94% | 43,076 psi | 90% | 2064 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 41,771 psi | 87% | 2034 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 88% | 42,685 psi | 89% | 2070 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 42,235 psi | 88% | 2103 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 40,857 psi | 85% | 2119 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 41,263 psi | 86% | 2077 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 92% | 42,105 psi | 88% | 2087 fps | 97.3% |
| Alliant Reloder-17 | <<locked>> | 98% | 41,220 psi | 86% | 2139 fps | 97.8% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 41,118 psi | 86% | 2067 fps | 96.3% |
| Bofors RP3 | <<locked>> | 96% | 43,279 psi | 90% | 2119 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 41,930 psi | 88% | 1998 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 88% | 41,858 psi | 87% | 2090 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 84% | 40,756 psi | 85% | 2106 fps | 97% |
| Hodgdon H322 | <<locked>> | 82% | 42,090 psi | 88% | 2044 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 42,525 psi | 89% | 2060 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 94% | 42,308 psi | 88% | 2080 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 88% | 42,192 psi | 88% | 2073 fps | 98.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 35,186 psi | 74% | 1978 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 43,033 psi | 90% | 2133 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,011 psi | 71% | 1266 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 40,901 psi | 85% | 2037 fps | 97.9% |
| IMR 3031 | <<locked>> | 90% | 43,105 psi | 90% | 2106 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 42,496 psi | 89% | 2047 fps | 97.3% |
| IMR 4895 | <<locked>> | 92% | 43,047 psi | 90% | 2113 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 86% | 41,771 psi | 87% | 2034 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 82% | 40,785 psi | 85% | 2021 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 90% | 42,525 psi | 89% | 2087 fps | 99.8% |
| Lovex S060 | <<locked>> | 86% | 40,901 psi | 85% | 1982 fps | 97.4% |
| Lovex S062 | <<locked>> | 92% | 41,452 psi | 87% | 2047 fps | 98.8% |
| Norma 201 | <<locked>> | 88% | 41,031 psi | 86% | 2024 fps | 98.7% |
| Norma 202 | <<locked>> | 88% | 41,046 psi | 86% | 2041 fps | 99.9% |
| Norma 203B | <<locked>> | 92% | 41,292 psi | 86% | 2077 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 92% | 41,147 psi | 86% | 2090 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 88% | 43,134 psi | 90% | 2090 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 42,859 psi | 90% | 2034 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,069 psi | 71% | 1296 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 41,698 psi | 87% | 2031 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 41,220 psi | 86% | 2126 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 41,481 psi | 87% | 2152 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 86% | 42,612 psi | 89% | 2028 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 90% | 41,539 psi | 87% | 2028 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 98% | 43,221 psi | 90% | 2110 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 42,525 psi | 89% | 2087 fps | 99.8% |
| Shooters World Precision | <<locked>> | 92% | 41,452 psi | 87% | 2047 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 42,395 psi | 89% | 2116 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 43,265 psi | 90% | 2083 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 41,133 psi | 86% | 1965 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 42,322 psi | 88% | 1995 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 42,061 psi | 88% | 2064 fps | 99% |
| Somchem S335 | <<locked>> | 88% | 42,395 psi | 89% | 2001 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 41,829 psi | 87% | 2054 fps | 97.5% |
| Somchem S355 | <<locked>> | 96% | 41,771 psi | 87% | 2077 fps | 98.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 33,968 psi | 71% | 2018 fps | 97.3% |
| Vihtavuori N130 | <<locked>> | 82% | 41,104 psi | 86% | 1949 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 43,250 psi | 90% | 1995 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 42,540 psi | 89% | 2051 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 41,437 psi | 87% | 2028 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 42,844 psi | 90% | 2067 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 86% | 41,611 psi | 87% | 2031 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 92% | 42,206 psi | 88% | 2057 fps | 99.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,713 psi | 87% | 2054 fps | 97.8% |
| Winchester 748 | <<locked>> | 88% | 43,047 psi | 90% | 2106 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 41,930 psi | 88% | 2083 fps | 98.3% |
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% | 35,926 psi | 75% | 1909 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 38,421 psi | 80% | 1982 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 28,239 psi | 59% | 1837 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 33,721 psi | 70% | 1939 fps | 98.6% |
| Accurate 4064 | <<locked>> | 80% | 26,789 psi | 56% | 1821 fps | 97.7% |
| ADI AR 2206H | <<locked>> | 80% | 32,822 psi | 69% | 1903 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 88% | 35,824 psi | 75% | 1946 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,708 psi | 73% | 1919 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 80% | 33,025 psi | 69% | 1929 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,595 psi | 83% | 2060 fps | 97.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 38,130 psi | 80% | 2070 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 30,139 psi | 63% | 1880 fps | 95.4% |
| Alliant Reloder-15 | <<locked>> | 86% | 34,983 psi | 73% | 1969 fps | 95.3% |
| Alliant Reloder-17 | 34 gr | 92% | 34,113 psi | 71% | 2008 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 38,406 psi | 80% | 2021 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 29,124 psi | 61% | 1877 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,144 psi | 78% | 1923 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 32,024 psi | 67% | 1926 fps | 97.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 35,476 psi | 74% | 2014 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 39,450 psi | 82% | 2005 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 39,610 psi | 83% | 2018 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 39,711 psi | 83% | 2041 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 32,967 psi | 69% | 1913 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 33,098 psi | 69% | 1939 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 31,299 psi | 65% | 1923 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,150 psi | 53% | 1129 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 31,937 psi | 67% | 1880 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 31,357 psi | 66% | 1919 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 35,244 psi | 74% | 1929 fps | 95.4% |
| IMR 4895 | <<locked>> | 84% | 33,547 psi | 70% | 1952 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 34,708 psi | 73% | 1919 fps | 97.2% |
| Lovex D073.5 | <<locked>> | 80% | 37,971 psi | 79% | 1978 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 30,560 psi | 64% | 1890 fps | 97.8% |
| Lovex S060 | <<locked>> | 80% | 34,098 psi | 71% | 1867 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 28,747 psi | 60% | 1821 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 32,271 psi | 67% | 1877 fps | 96.6% |
| Norma 202 | <<locked>> | 80% | 31,908 psi | 67% | 1886 fps | 98.7% |
| Norma 203B | <<locked>> | 84% | 32,169 psi | 67% | 1919 fps | 95% |
| Ramshot Big Game | <<locked>> | 86% | 34,142 psi | 71% | 1965 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 33,214 psi | 69% | 1923 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 37,739 psi | 79% | 1952 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,309 psi | 53% | 1155 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,798 psi | 81% | 1985 fps | 99.2% |
| ReloadSwiss RS 52 | 31.3 gr | 86% | 36,056 psi | 75% | 2037 fps | 95.6% |
| ReloadSwiss RS 60 | 31.1 gr | 84% | 28,514 psi | 60% | 1890 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 35,781 psi | 75% | 1919 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 80% | 30,705 psi | 64% | 1837 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 88% | 31,314 psi | 65% | 1913 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,560 psi | 64% | 1890 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 28,747 psi | 60% | 1821 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 35,447 psi | 74% | 1998 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 33,330 psi | 70% | 1916 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,243 psi | 72% | 1857 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,731 psi | 58% | 1755 fps | 98.3% |
| Somchem S321 | <<locked>> | 80% | 36,550 psi | 76% | 1975 fps | 98% |
| Somchem S335 | <<locked>> | 80% | 33,518 psi | 70% | 1860 fps | 99.4% |
| Somchem S341 | <<locked>> | 82% | 34,229 psi | 72% | 1929 fps | 95.4% |
| Somchem S355 | <<locked>> | 86% | 30,574 psi | 64% | 1880 fps | 95% |
| Somchem S365 | <<locked>> | 96% | 29,878 psi | 62% | 1929 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 38,972 psi | 81% | 1919 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,127 psi | 71% | 1860 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 29,153 psi | 61% | 1841 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 30,211 psi | 63% | 1841 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 84% | 27,485 psi | 57% | 1801 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 34,418 psi | 72% | 1913 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 80% | 28,906 psi | 60% | 1831 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 34,374 psi | 72% | 1929 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 33,011 psi | 69% | 1939 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 82% | 32,532 psi | 68% | 1923 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 69 powders for .308 Marlin Express loaded with the .300 | 220gr | Berry's Spire Point. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,152 fps; across all powders the maximum-charge window runs from 1,266 fps to 2,152 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 69 of the 69 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, 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, ReloadSwiss RS 52, Alliant Reloder-17 rank at the top here: for .308 Marlin Express with the .300 | 220gr | Berry's Spire Point 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.