Over the past few months I've been trying different ammo in my CZ 457 22lr Varmint. I was getting discouraged in it's ability to shoot tight groups until yesterday. I tried SK ammo and things came together quite well.
My best group was with SK Standard Plus but I also had some good groups with SK Pistol and Rifle Match. SK Semi Auto worked well a week ago but not so much yesterday so more testing will be done.
Steven