bsa, I'll jump in here. Your original question didn't specify the type of .22, so it could be anything from a garden variety factory sporter to an olympic rifle with precision iron sights. The context seems to favor the former.
My sense is that iron sights are underrated in this age of scopes. I shoot BPCR silhouette, both iron and scope classes. As my eyes have aged along with everything else, I prefer scopes. However, with the advent of the scope class, those in the BPCR game found that there really wasn't that much difference in scores. It would seem that scope scores would be higher, after all there's a reason BR shooters use high powered scopes, but there really hasn't been that much difference. Of course those rifles use precision tang sights, and have a long sight radius.
Going back about 40 years to when I shot muzzleloader matches, there was some mighty good shooting done with notch rear and blade front sights. Five shots in about 2 MOA weren't uncommon. Here's a pic from 1976 of my son and a match winning target shot at 100 yards with a .50 cal. Hawken and round balls. He was 8 y/o, and now he's at bifocal age himself. That last shot at 9 o'clock would have been center if it weren't for my missing a wind call. Just shows what can be done with iron sights.
Those were good days.
Steve's pics of that great old Stevens are a pretty good indication of what a good .22 can do at 50 yards with iron sights. Gotta love those vintage single shots.
Paul