Quote Originally Posted by SeanMP View Post
I'm thinking it's a small dab of one or another fulminate or Armstrong's mixture such as was in the paper roll caps we played with.Does anyone know where you can buy those roll caps?
That's a great idea! Gunzlaw discovered that the small caps held in plastic circular clips are EXACTLY .177 in size and can be placed on pellets. I don't remember if they go bang when they hit something or when exiting the barrel.