Hello All,Most of the inert rounds in my small SAA collection are made with fairly modern components I think, apart from various dated military pieces.I add what is hopefully an older,more original round from time to time when I come across something of interest.I'm thinking of adding another .577 Snider round which is headstamped Kynoch at the top,and .577.S at the bottom.The round that I have already,has .577 at the top,a kangaroo either side and BB at the bottom.What should these headstamps tell me about these rounds?