Lucky dog! I've never owned or shot one so I'm not much help on the BH. But is shoot the snot out of it if it's in good condition.
I've got a lot of rare guns that had never been fired til I bought them...hell with that! They don't do me a bit of good if I can't use them. I'm the same way with bows. I just painted up a Black Widow Golden Anniversary longbow and it's going to the woods with me in the morning for opening day. The paint will come right back off when I want it to. It may get scratched, scuffed, dented, etc...but I could also die in a car wreck on the way home tomorrow. I'm never hard on equipment but I use it for it's intended purpose...it's useless if I'm affraid to use it.
We only live once!