I'm looking for a truly over the top slug. something I can put out of my Mossberg 500 that is just ridiculous in terms of speed/power. Can be up to 3"....Magnum in fact prefered. Final point (just go with this - don't ask why...) is there anything wrong / problematic with painting the shell? Maybe spraypaint? I want to designate these rounds clearly. Wanna kill these ads? We can help!