So I'm just starting out in rifle reloading and have some questions about some loads for my 7.62x39. I am trying to use components that I have found to be readily available in stores near me and that combination has turned out to be, IMR4198 23grns, with a 125 grn Sierra boat tail that's. 308 instead of. 311 like the load data shows. I haven't loaded any yet because I wanted to make sure that going with a different diameter bullet wouldn't be dangerous or have adverse outcomes. I changed the expander ball in my small base taper crimp rcbs die set to work with. 308, does anyone have any advice on this?