I would HIGHLY SUGGEST crimping any ammo that you have that goes through an AR Gas Gun, no matter what anyone else "states as fact" anywhere.
Loaded up a 100 round drum of 5.56 to run in a bump-stock gun, and it jammed up pretty good - ALL the next rounds that were coming up that feed are were setback in the brass. The owner of the gun didn't crimp them.
I'm glad the gun jammed. Those setbacks could have been really, really bad, really, really fast...
Crimp your loads if they're going through an AR Gas Gun.
NF1E - your practices will catch up with you sometime, and I hope it works out well, and healthy, with no long-term damage.