I've been interested in purchasing a cannon for years, but have just now set my mind to doing it. I came across some fireworks in my deceased uncle's garage and loved the boom, so long story short, here I am looking for a cannon, and something that offers more safety and is legal. After finding some Thundermugs on firework websites, I saw cannonmn's Thundermug video and really caught the bug.
I've read through hundreds of posts on this website and I have determined a Thundermug with a golf ball bore is probably the right thing to get me going. I don't intend on firing projectiles much, but I want that option. Is it worth having a custom Thundermug made with a powder chamber for the times when a golf ball will be launched? Would there be an adverse affect on the chamber when the mug is fired with a large amount of powder (within safe limits) and no projectile? I know the starting point for the mug I want will be a 4" diameter, or possibly 5" to get the design I want. I would welcome any Thundermug plans or lessons learned.
I did speak to Dominick on the phone and am anxious to see some of his new designs.