I generally carry a spare round in my pocket and remove the magazine and load that single round by dropping it in and then as you say using the forward assist to be sure it is seated. Still it isn't like being able to do it quietly the way a bolt action can do it, but I sure like the quick follow-ups.
Glow Bull Warming:
He that sitteth in the heavens shall laugh: the Lord shall have them in derision. Psalm 2:4