Our club is private property. Members and guests can carry loaded guns anywhere except inside the bar area. Best damn security there is.
We have recently installed keycard access to the outdoor ranges. Standing orders are that you open the gate for NO ONE but yourself. Authorized members should have a working card. Of course, rules are broken. It happens.
During 'events' the gate is propped open and people can come in and out, but at those times, you generally have about a dozen 'well regulated' shooters around.
Even so, a chain link fence isn't a real barrier and a determined person can always get by. It's just a lot more obvious.
I don't think the rules of self defense change just because you are at a formal club range as opposed to anywhere else. The only real difference is that gunshots will not cause anyone to call the police.
I don't recommend buring the bodies in the berm. Just ask anyone over at Hopkington Sportsman's how annoying it was having the state police digging up the ranges. Then again, they DID clean up nicely when they were done. (^_^)
Seriously, if all the conditions for defending ones self are met (it's really those conditions you need to learn and a forum is NOT the place to do that) then you are justified in the actions of self defense. Otherwise, you are not. It's really that simple. Regardless of who, what, or where.
How many violent crimes have you heard about at ranges or gun shows?
Even in teaching classes where we have a LARGE array of firearms as teaching aids in a classroom that is ammo free, there are measures taken for safety and security. For obvious reasons, those measures will not be discussed.
I think the biggest issue we ever had was the guy who looked like he wanted to walk off with a fairly valuable Hi-Cap magazine. We also had the "men with accents" issue where they changed their address twice during the class (one day class) which prompted three of the instructors to call the licence authority in all three towns. Never heard anything from it, but it was a little unsettling. I think the worst part was the whispering amoung the men with phrases like "Dirka Dirka Muhamad Jihad" But I could be mistaken.
Wierd stuff happens. Just remember that the use of a firearm MUST be the last possible option and look for other ways to handle the situation.
I close with a repeat of my mantra "Get More Training".