Well, mine is a 453, and they are different in more ways than just the trigger. The bolt is also different. Mine feeds TC, HP, RN, Dynapoints -- bulk and not so bulk. Must have got the only good one they made according to you guys, but some folks over on rimfire central think otherwise. To each his own. Mine has shot one hole groups consistetly at 25 and 50 - haven't tried it further out yet.
