That drum wasn't very cooperative, but by using EVERY SINGLE TRICK you fellas provided, the drum finally saw it my way
What finally convinced it was:
1. I dressed the edge of the axle flange with my carbide bur to knock down a slight ridge that magically appreared there (probably related to a couple of missed whacks with a 5-lb. sledge

);
2. I used my brake adjustment tool to wiggle the drum back'n'forth on the hub, spraying periodically with more penetrating oil--OH HAPPY DAY WHEN THAT CRACK TWIXT FLANGE AND DRUM APPEARED!
2. I made a drum puller using a length of structural angle that was wide enough to span the OD of the drum using the puller's screw and jaws. The drum made an interesting POP! noise when it leaped off the flange
The cold one made an interesting POP prior to guzzle, too
Eddie