I noticed on looking through Dillon 550 shellplates that both the 45acp and the 30-06 both take the same shellplate. On going to SAAMI specs they are very close to the same. Same rim thickness and only .007 difference in diameter. This led me to ask this question: Since both were military cartridges developed in about the same time period- was there a military reason both had similar bases? ie, brass case forming equipment, etc? Even further, could s 30-06 case be cut down to repurpose as 45 acp? Hey it’s cold and wet outside here on east coast and I’m daydreaming of better times! Just curious?