Drum brake issues

Likely the drums were replaced once, in which case the swedges would be gone, and I doubt anybody could or would have reswedged the studs. I have always thrown the drum down in an abandoned parking lot, trying to hit it flat on the inner surface. After a few good throws, the hub falls out of the middle. A new 9" front drum is like $20 on rockauto, but you can pay for hopefully better quality if desired.