I read on the PA shooting forums that the public ranges run by their game & wildlife association only allow 3 rounds in a rifle mag at a time and they're REALLY stingy about enforcing it.

 

Is this the case at a private range like EFGA (Easton Fish & Game Association) or can I actually use my whole mag there?

yes, in easton you can run your full mag. If you check the calendar, they also have a full-auto day event.

No problems at Easton for full mag

awesome, thanks. just joined so I have a place to sight in my AR!

No restrictions like that at EFGA. I often annoy the hunters who are sighting in their bolt actions firing 1 round ever 5 minutes while I blast away next to them with my ARs with loud muzzle brakes.