If I neglect to address this post to one specific responder please accept my apologies. Just started and still feeling my way through this site. Yes it is a solid 3" diameter round and 30" long. Sitting in my garage as we speak. I had concerns about the strength of the material. Only one gouge on it but this should cleanup ok. I live in louisiana and as you may have heard it has been very hot down here. This is my "cool weather" project. Will have to decide as to what I want as the possibilities are endless. Now lets see, I could make one entire cannon, or end up with two or three. Decisions, decisions. My only problem would be attaching the trunions. As I see it this could be done either one of two ways. First off would be to have someone mill a couple pockets 180 degrees apart and either braze or silver solder them in place. Or make up a sleeve bigger than three inches and have the trunions and sleeve brazed or silver soldered together to form one entire piece. Someone once mentioned welding on brass, is this possible? and what is the process for this?. I have a bigger piece of brass about 13" long and maybe I need to use this as a "learning" lesson before trying to do the bigger one. Would be a shame to screw up the bigger piece as this is probably a once in a lifetime "find" Did a lot of dumpster diving and scrap yard scrounging and never did luck out like this. Thanks for the responses, keep 'em coming as I need lotsa help. Thanks, Frank