.308 Marlin Express [SEP] designer
.308 Marlin Express
The .308 Marlin Express is a cartridge developed in 2007 by Marlin Firearms and Hornady. It is based on the .307 Winchester with a goal to duplicate .308 Winchester performance. The cartridge uses a slightly shorter, semi-rimmed case similar to that of the .220 Swift to function in lever action rifles. As introduced in Hornady's LEVERevolution line of cartridges, it is the highest velocity production cartridge designed for lever action rifles with tubular magazines. It is chambered in Marlin's Model 308MX and 308MXLR rifles using the
the .308 Marlin Express at roughly the same velocity. It is chambered in Marlin's Model 338MX and 338MXLR rifles using the Marlin Model 336 action.
Design History and Cartridge Performance.
Whereas the .308 Marlin Express began by modifying the .307 Winchester, Hornady and Marlin engineers started with a previous collaboration between Hornady and the Austrian arms maker Steyr, the .376 Steyr, when designing the .338 Marlin Express. The case of the .376 Steyr was given a thicker web for added strength, then necked down to .338. The .308