First of all welcome to the site. Next if you don't have a pair, buy a set of reading glasses so you can familiarize yourself with how Black Powder cannons work, and the proper and safe way to use them. Next go to the sponsors section and check out their merchandise, also there are members who make all kinds of parts for cannon use out of there workshops. I have used them and I have been very satisfied by the results and some have become email buddies. My choice has been Michael at Brooks Brass jsbrooks-usa.com He makes some great brass cannons. I have am 50 cal. (first) 69 cal. (second) and another 69 cal. (third) and a 1" bore being made at this time. All with naval carriages. However that was my choice. There are guys like Zulu, Dominick, Rocklock1, armorerr77 and so that do great work. Enjoy your search and remember keep your powder dry.