I got my CZ style in May of this year and it now shoots good 1/2"+ @50m 5 shot groups. BUT when I first got it I got 500 remington subs. What a bad choice. Groups of 5"-6" so disapointong. It was only when I changed ammo that my groups shrank to under 1". I fitted the brooks fit used the fatest tube and #2 light spring. Groups down to 3/4". I then saw that the barrel was touching the stock at the forendso I placed a small piece of plastic under the barrel just behind the front lug, this rised the barrel off the stock and I could get a folded paper all the way down between the barrel and t