I borrowed a .22 rifle(Remington Speedmaster 522)from a friend to see if I can get into the small bore thing. First time out, I'm groovin' on the Scope, looking at 3-4" groups I'm putting into 50 yard target...click. I'm used to pistols & revolvers, so, I'm looking at chamber: I see .22 casing at about 30 degree angle. Using gentle pressure, it is STUCK. This is a Tube-Feed rifle. Anyone? It was great for the first three "tubefuls".