Bearcat74 - they look like they are designed for 38/55 use but can be used in 375 Win. A lot of the 375 moulds around are designed for the 38/55 - they have a shorter meplat to crimp groove measurement. 38/55 brass is longer than 375 Win brass, but both loaded cartridges have the same OAL.
I use a few 38/55 moulds and either crimp in position to maintain the OAL using a Lee Factory Crimp die or crimp into one of the lube grooves if that is conveniently placed..
Since these bullets are lubed, exposing a lube groove means you might pick up grit in the exposed lube groove. If that bothers you clean out the lube from any exposed groove.
Last edited by JFE; 04/10/16.
