Very informative…Fun historical note: "Automatic" originally just referred to self loading, more literally self-readying from an internal ammunition source. The "A" in .45 ACP stands for "Automatic", as in Automatic Colt Pistol. This was to differentiate from repeating. "Repeating" meant it could be manually readied to fire again from an internal store (as in cocking a lever action cocks the hammer and presents a new cartridge until they are expended). "Semi-automatic" didn't enter the common lexicon for decades afterward, so calling a self loading pistol or rifle "automatic" isn't actually wrong as much as it's archaic.