separating front hub from drum?

That's exactly right. The correct size studs will no longer work if you simply press them out. Also, if you intend on reusing the drum, you can forget that too, because it will tear the drum. Ask me how I know.
I know this is an old post but from what I reading the swedge is located on the outside of the drum around the lug studs? So if you use a hole saw your looking for one that will fit over the stud and just cut deep enough to cut through the swedge? Trying to wrap my brain around the procedure. Thank you.