Some like to think that everything old was the 45 Colt cartridge but there were alot of 44 cal cartridges available before the 45 Colt.
The paper thin rim of the 44 Colt (used for conversions to cartridge) and the 45 Colt were always a problem with extraction on advanced revolvers with improved extraction
my photos show the 44 S&W American from 1869, the 44 Russianfrom 1870, the 44 Colt used in conversions and the 45 Schofield 1874
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