A short while ago, I bought a new .223 with the new style checkered synthetic stock, and it shot right out of the box.......It did until a day or so ago when the new beagle slam dunked it. Knocked it over on the floor and put the scope out. Now, I don't know what it's doing, but I'll be shooting it this weekend and soon find out. My standard contour 22 In. Handi .223 is one of the very few inherently accurate rifles I've owned in my lifetime.
I'm sure there's a fix. Try what Tim suggests. When you find the problem and fix it, it'll punch dimes at 100.
Pete