tkcomer
Member
While waiting on my back ordered Model 1 upper to come in, I thought about trying to gather some data on loading for the 7.62x39. I have IMR 4227 on hand, CCI 200 and 250 primers. The load data is throwing me. The Hodgdon site only list one load for the IMR 4227. Maximum, and that's 18.5grs with a 125gr spire point bullet with a .311" diameter. No mention of what primer they used. My second edition Sierra book lists 20.6grs starting to a max of 24.3grs. But that is with their .308" spitzer bullet and a CCI 200 primer. That's a sizable spread. If I decide to load for this gun, I'll use the Hornady .310" 123gr FMJs. So does anyone use IMR 4227 with the Hornady bullets? If so, what load data are you using?