Good points, all...
I do have an alarm system and one of those mace bombs ordered too. I agree that there is just no stopping a determined thief, all I can do is make it hard on them.
Alvin, I like the idea about storing the bolts seperately though. I agree with Ed that they will almost certainly be stolen anyway, but at least they won't get near the value out of them. But I also have a lot of AK's and other guns that aren't as easy to remove bolts but that I also want to have handy in case I might need them in a pinch. What I may do is to put some of the more valuable gun's bolts in the small safe that's hidden in the house and that way they will still be close to hand.
I'm still looking for the right door though. I've decided that it should be a regular looking door that is solid and has several secure bolts to keep it locked. I'll reinforce the frame a bit more too.
Besides that high dollar unit from Browning that Clint suggested, anyone know of any other manufacturers that make them?