Well, its finally out. I took the gun out of the freezer and as I was heating up the barrel, the primer fell out. That worked for me... Anyway, I filled the casing with penetrating oil and then felt comfortable. I tried in vain to knock it out with a 5/16 aluminum rod, as it just bent after several whacks with the hammer.
So, after frustration set in, I decided to visit a gunsmith. He fooled around with it for a moment and after several failed attempts to remove it from the breech end, he stuck a steel rod down the barrel. About three good whacks from a large hammer and it flew out.
Examination of the brass revealed some pretty good scratches caused by roughness in the breech. We slightly honed and polished the breech and now the cartridges feed just right...new ones that is. The ones I only neck sized still seem to stick a little just as the belt enters the breech. However, I have full length dies and a case trimmer on the way. Hopefully I'll have ammo loaded for my Texas hunting trip at the end of the month.
Again, thanks to all of you for suggestions and possible remedies. Its always good to know someone's out there to offer help.
Karl