I was at a range a while back and had a soft sided case with unloaded rifle inside and loaded mags in the side pocket. RSO must have seen it and told me it wasn't a good idea. He told me to buy a range bag for mags, ammo and other accessories and it didn't matter if I through them on top of one another as long as ammo and mags were in a separate bag than the gun. Didn't matter if mags were loaded or if anything was locked. Take it for whatever its worth, but I left the store with a range bag and have been following his advice ever since.