I bought my father in law all the dies and stuff needed to reload 223 for me (he already reloads .40). A few quick questions... I know I want to do 55 grain target bullets... but what size do I need to get? I can't find .223 projectiles... just .224. And what is a cheap projectile... this will just be for plinking. Do .223s use small primers? I already have the brass and the trimmer needed.