new to reloading, have rcbs reloading gear n want to reload for 223 for varmints. I have the rcbs small base ar die set. Want to load for bolt gun a Mossberg MVP can I use the ar die set or should I get the reg 223 die set for that gun? I do have ar guns to just didn't know if should use Two different dies for different style actions. Also any recommendations on powders? Thanks guys can always find answers on here.