A couple of recent projects have left me with several bronze bushings.
I have no idea of the composition of the metal, other than the description "bearing bronze." These bushings are used on heavy equipment, and are solid bronze.
Would this be a metal suitable for casting a small barrel? I probably have more than enough for a golfball-sized mortar.
Years ago I used to get tons of these and they all went to the scrap yard. Nowadays the cheap 'bi-metal' bushings have all but eliminated the good solid bronze bushings.