The only time I've cut the rivets off a front drum is when the drums needed to be replaced. Just take the spindle nut off, and slide hub, drum and all off the spindle. It's easier and more accurate to machine the drums using the bearing races as centering points, too.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!