I hear a lot of folks talking about making snap caps from spent shells; this is exactly why I think that idea is, well, not smart.
The A-zoom color is fairly easy to differentiate from the color of an actual round. Brass or nickel; much more difficult. While it's true that there's no substitute for caution and always "knowing" you're doing it right, I'm not willing to stake my life or anyone else's my ability to always be right.
I once read an essay by sporting artist Bob White about a loaded gun that he was SURE he unloaded. No matter how careful we are, or how sure we are of our routines, accidents happen.
