RE: Surprise B-Day Gift!!
It's not the type of rifle that matters, it's that it came from your grandpa that really counts. You're lucky to have a grandfather like that. I never knew my maternal grandfather (died when my Mom was 14, but from what I hear about him, I wish I had) and the other never really cared whether I (or my brother or sister, for that matter[:@]) existed. I'd suggest that, if your grandpa is up to it, you suggest a grandfather/grandson hunting trip together and take that rifle with you. As a father myself (of two young kids), I can say that just thinking about that possible future makes me very happy.
Mike