Have you shot or hunted much lately? If not, and you have that many rifles and kept them in crates, does it really matter what you buy next?
Just cut up a list of cartridges, put them in a hat, and draw one. Or...just go out and shoot a few that you already have and enjoy them. You're a very lucky guy and don't even know it.
People are like rifles. Some are tried and true, having great eyes, personality, and fun to be with. Others never seem to hit the mark with you. Still others go off half-cocked. Still, it's nice to know most of them.