:cb2: I have one semi-automatic .22, a S&W 2206, that shoots everything except Remington. I have had great results with anything Winchester, from Wildcats, Dynapoints (which I haven't found around here for years), and Xpert Hollowpoints. Federal Classics are really great, as well as CCI Subsonics, Small Game, and anything slow.
Had a Mark II once, and all it would shoot were CCI Blazers. Too much trouble. Got rid of it.
However, being a basic wheelgunner type fellow, my Ruger .22 Bisley, SP101, and S&W 617 will shoot anything. So if all I have is Remington, I leave the automatic at home. (Seems I do that most of the time anyway.) The SP101 gets most of the action, unless I'm squirrel hunting. Then I pull out the scoped 617.
I really don't care what I shoot in the 10/22 or the 77/22 Varmint. They're just rifles, and don't count for much.