Since access to your guns on short notice is important to you, off campus storage is the only answer. You should explore the options offered here. There might be a sympathetic faculty member available at some point. One of my friend's professors became a great friend and he would have gladly stored the guns. I had the same problem and didn't have easy access to my guns for one semester and summer session when I lived in the dorm. But frankly, I was too busy to hunt so I didn't. I eventually lived off campus and started to hunt and shoot again. But being poor as a church mouse, I shot very little all the way through. Just couldn't afford it.