Roy, like you, I reuse my arrows and broadheads to. I always shoot the arrow and broadhead at my target to make sure their both still flying true.
I ain' t rich like a lot of these guys, can' t afford to retire an arrow or b/h after one shot through an animal. as far as retiring that particular arrow, I would wait till I killed a buck big enough (unless you already have) to have a shoulder mount, then I' d lay the arrow accross the horns and glue it on. just my opinion though, that decesion is up to you.