I have 4 .22's. A Stevens 87D, Remington 550-1, (both from the 50's), a CZ 455 Lux and a 10/22 (which are both under 5 years old). Somehow, I've lucked out and they all run Winchester Powerpoints (37 or 40grain) really well. When I had bought the Lux, I also picked up all sorts of 22lr to see what it shoots best. There weren't any really bad shooters, but somehow the Remington ended up near the bottom. A year later the pattern repeated itself in the 10/22 on my first trip out. It was a used but well looked after, and the PO had good luck with the Winchester as well. Stingers did very well, as well as the Winchester and maybe a bit better, but I really couldn't justify having them just for one rifle. I also had more than a few bricks of the Winchester around. Keep in mind none of the other ones I tried was match grade or subsonic ammo, all stuff for turning gophers and squirrels inside out which is really the main reason I have .22's.