Several years ago I made my first cannon. It was a simple afair, a half inch grade 5 bolt with 3/16" hole drilled lenghtwise for a bore and a small touch hole. A pinch of powder behind a bb would make grown men giggle.
This spring unemployment was taking its toll on me and I spent entirely to much time online. I found this forum as a result. I don't own or have access to a lathe so the cannon was made on a drillpress and involved a great deal of fileing. Since I was blessed with an excess amont of time I was able to go slow and it turned out well. The bore is centered and has very little runout. The cannon is 9 inches in length overall, the bore is 1/2" and 7" deep.
It is only a .50, but a patched round ball in front of 35 grains of BP makes me feel all warm and fuzzy inside. Now I want a bigger one so I have to go and buy a lathe and I blame the members of this forum.