The store bought,partially cooked,basically need a full warming.
I think on the Smithfield wrappers,they used to say heat to an internal of 148�.
That takes care of the varmits.
Virginia hams put you into the curing process,which most folks at home don't mess with.
Best bet is to buy one cured and cook to the packer's instruction.
Virginia HamsYou can also take a good quality grocery ham,inject with flavor,smoke at least overnight,at 200� with some fruit wood.
You can virtually pull the ham,like a butt.