Just wanted to give a "thanks shout out" for the advice re: hot melt. I used the torch for the chore, and it seems to be the right tool for the job. I was shooting earlier today and hit the metal frame of the old patio chair I use for my target stand (it has pretty good deer dimensions with a grass-bag target laid horizontal). Normally, a leg or frame shot would definitely cause an epoxied insert to pop out (yes-even the 24 hour cure), and so far, the glue has held. Fortunately, I didn't hit it with every arrow, but so far so good.
I may get a cylinder from Big Jims just since it is so highly regarded by so many here. Thanks for the advice!!