I used to build non firing replicas for civil war reenactments..
Wifeanon put the kabash on that till the house is paid off. Not a cheap hobby.
I am relegated to .50 cal black powder now. Still not cheap but it scratches an itch. Currently (slowly) working on a Traditions Old Ironsides kit. Barrel was bored like shit so I gotta get it on the Lathe at work and trim it up. Eventually!!!
https://cannonsdirect.com/