I'd say you did pretty well with the trade.
So far, the only load my M4 won't feed 100% is 2 3/4" Remington LE Reduced Recoil 00 BK. Winchester bulk pack even cycles great.
Remington LE full power 2 3/4" 00 is my standard load with Federal Tactical 9 pellet 00 w/ Flitecontrol for longer ranges (this load is truly amazing).
Yours should also cycle anything you put in it.
Enjoy it.
Grizz