I had shot plenty of guns before the military but never ARs. So the standard procedure stuck with me from boot camp at the range, afghanistan before I stepped outside the wire everyday, and even today hunting.
When loading a bolt closed and unloaded weapon, stick mag in, chamber round, pull slowly on charge handle until I see for my self that round is in the chamber, close bolt, give the FA a good palm heal strike.
I knew that every day I left the wire or a animal is in my sights, that round is ready to go.
I do the same thing with my bolt actions as far as watching the round slide into chamber.
FAs are a real AR specific item. any other weapon that has ever had a charging handle can be used the exact same way, hitting it forward.
Never had to use my FA in combat, even when my weapon was wrecked and nasty, I never had one jam