I know I can't wait to try to blow up my multi thousand dollar investment with a homemade POS, WTF? Why in the world would you ever want to put your head on the other end of a big bore caliber and launch projectiles through some unproven metallic tube using whatever hardware you can find at Walmart? Even if you have no concern for the $$$ or your equipment I have to assume you like your vision and your face arranged the way it currently is..... By all means make sure to video document for posterity.