I want to make a can type muzzle addition to help keep fireball contained. I was thinking take a piece of cut off shotgun barrel and solder a plug on the end tapped to fit barrel threads. Is there a right or wrong way concerning this? I am to frugal to buy something if I can make it. I do not want to put time into it and find out I goofed. The barrel is a 16 inch 7.62x39 caliber that really likes h335 jammed tight in cartridge hence the BIG fire ball!