Went shooting today and had a problem with wolf polymer 55 grain hp.  I had two cases stuck inside the chamber that would only budge by putting a rod inside the barrel and beating it out.  This has never happened to me before with wolf and it puzzled me.  The only thing that I could think of was a dirty chamber on my ar.  Could this be the problem?

The only thing that I could think of was a dirty chamber on my ar. Could this be the problem?

Probably.   Grab an AR chamber brush on the end of a short cleaning rod, chuck it in a cordless drill, spray a shot of CLP on it and spin it for about 10 seconds in the chamber.  You won't have any failures for another thousand rounds or so.