SOOO you lightly heat up the case  grab you hot gloove give the case a real smart rap on your wooden work bench
and the rear bearing does not come out
What do you try next?
Thanks
Fred Quedenfeld jr

Clean it up well, Put it in an iron skillet ,facing backplate area down, insert into a 450 degee oven and let the case expand, the bearing should drop to the skillett.
If it does not you may have too much rust, too much burned castor, or too much of both, In that case install in a crock pot full of 100% antifreeze, and cook for 8 hours to clean the area, then try again

Randy

Unless it's under a clamp-down pressure lid it only gets to the boiling point of the antifreeze, which I don't exactly know, but I think it's not much higher than water, 100 C.

I once had a Taipan 2.5 (last one, Rossi/Conquest clone) with a bad rear bearing that refused to come out. I turned a piece of soft (6061T6) aluminum rod to fit the bearing ID, drilled a 1/8" hole down the center. Then I split this plug about 3/4 of the length, screwed in a small sheet metal screw, (screw head inside the case bore) and with some heat and some tapping on the head of the screw, out she came. Turned out to be a nice runner, but not as fast as a Rossi or Conquest.  Steve

Fred, try heating the case in the oven for half an hour at 250 deg. and then whack it.  If that doesn't work, Steve Helmick's idea should do the trick.