You posted:

So I load in a 30 round PMAG let my friends father have some trigger time, when all of a sudden I notice the "kid" (baggy pants hanging below his but, t shirt 3 sizes to big, and sloppy looking) who is actually calling the line at the range walk over and tell me I can't use my 30 round mag. I explain to him I am an LEO show him my ID.

What are the established range rules regarding 30 round magazines and loading them all the way up? Do you feel that since you are a LEO, you might somehow be exempt from the rules if the kid was just following established range procedure?

Danny