I went deer hunting yesterday and my friend's rifle didn't fire for 3 shots in a row. He was shooting some kind of Winchester ammo. He put a new shell in the chamber and put the rifle back on safety and then moved it to fire and it fired. The weird part, and I'd like you guy's advice on this, is that the primers of those 3 shells were dented. Any thoughts on what might be going on? He shoots a newer Winchester 30-06. I'm not sure of the model, but he bought it last year and it's sort of a standard grade rifle with a synthetic stock. Is it possible to hit the primer hard enough to dent it, but not hard enough to ignite it?? Thanks.