Well, IMHO, its their "sandbox", so its their rules.
Having said that, I find it stupid they allow people to take them in loaded CCW. In my mind, a loaded gun is a loaded gun.
Would be nice if they did have safety/clearing barrels, although, do you having a clearing barrel at home you use when you load and unload? I don't. Nor do any of my shooting buddies, or my dad when he carried. I'm not asking to be a smartass, I'm actually curious if most of you do.
I know ND's happen upon clearing, but I have heard more on loading the firearm, than clearing it. I really don't see how a person paying attention, keeping their finger off the trigger ever has an ND while clearing. And that is what it is a NEGLIGENT discharge if it happens.
As for the barrels at Shooters World, well I'm a member there and with the looks of some of the people I have seen shooting there, hell even working there, I have no doubt those take a couple rounds a year. There are a lot of people in that place that make me pucker when I think they have a deadly weapon with them.
All that said, I just wouldn't shop there with a stupid rule like that.