@idea from Mcgill
I think that you shouldn't be able to tell if a Gun is loaded just by lookingat it, maybe inspecting it or something. Dunno how that would work with Revolvers though.
If you look at a gun, you will instantly see if it has a clip in it or not. You will -KNOW- if it is 'LOADED' right off the bat.
You'll notice when you look at a gun it doesn't say 'You have 10 rounds left.'
It says 'The gun is loaded and ready to go.'
Like in the real owrld, you have to pull out the clip and count. (Doesn't work so well with revolvers, I know, but in general it is fine as is.)