I really like my Colt AR-15A2 HBAR and my Colt AR-15A2 Government Carbine. I would never load them with Wolf or Tula. I’d rather spend more money on NATO-spec ammo.
Personally, I like to test all my guns with as many different types of ammo as possible, so I can know what to expect should I ever need to switch for some reason. It’s good to know what your guns can/cannot handle.
I’m sure your Colts would run Tula/Wolf/Bear/whatever just fine, though.