1/2" groups at fifty yards isn't a realistic standard for most .22's IMO. Just look at the number of people who have tried the 1/2" group challenge thread here in the rimfire section.The number of successful posters, with pictures, is pretty small.Most who have successfully done the challenge are using higher end ammo and expensive rifles. The average guy shooting inexpensive guns using bulk ammo is going to be closer to an inch than a half inch. Those who brag about 1/2" groups should take the rimfire challenge and show us what they can do.I've been trying to get my cz455 to consistently shoot under 1/2" using different brands of ammo and still haven't found one that will do it.I get a couple groups that are under and a couple that are over.