How much stuff do you have to begin with? I am able to pack all my gear in a small backpack and fit 2-3 guns in my gun case. If you can do that, it may worth taking the risk and keeping them in your dorm.
If you ever decide to do this, decorate your gun case with artsy logos or things that go in long carrying cases EXCEPT gun related stuff.
All in all, I think it is better for you go in without your stuff in the first month and assess the dorm. once you are comfortable then move your stuff in.