I would also like some advice on making a cannon
My plan is to buy two to three DOM steel pipes and shrink-fit them together. My three main questions are: 1.) What is the safest and most optimal way to plug the barrel? 2.) Should I plug the outer pipe(s) as well? 3.) I have heard that placement of the touch/fuse hole is very important, so how do I find out the optimal position to drill that hole?
My main desire for wanting to do this is the lack of barrel length in the existing market. I'd like a long cannon to reach fairly high velocities for the projectiles I'm planning on developing. I have metal working and welding skills and experience, albeit not for this kind of application lol. If I get good results on my first iteration, I'd like to try rifling my second iteration.
I'd also be open to buying from any services that do this professionally. All the services I've found make custom casted cannons and I'm not interested in that.
Any and all advice is appreciated. Thank you.