i got an old .22 single shot that every time i fire a short in it i get what seem's to be a couple grains of burning powder thrown in my face. i know people say you shouldn't fire shorts in a long rifle chamber because it will erode the throat but my dad had the very same gun when he was a kid and he said it swallowed short's, long's and long rifle's without a problem. i've stopped using shorts but i like em for shooting cans near my friends cabin because they are almost silent and don't travel to far. anyone had a similar problem?