I REALLY like that last one. How did you cut the round back end of that? How big is it?View attachment 230488 View attachment 230489 I built these a while back. One shoots golf balls and the other is a 50 cal lead ball. Didn't have any plans just what was in my head.
The barrel is 10 inches long. The ball is 1 1/2 .. Me not being a machinest at all I just bought a steel ball and milled a flat and taped it and the back of the barrel.