Big Red I thought that was only people from my area (bottoms area river rats) who did things like that not refined people from the St Paul area.I have heard others say (not that I did this in my younger days) that the muzzle blast inside a truck can be quite loud! On more than one occasion I have been witness to shooting critters from inside the cab of a truck. It can make your ears ring to the point you can't hear the sound of your next beer being opened. It's best to have as many windows open as possible for such activities
