There are quite a few good 10/22 barrel makers but I think it's possible to get a lemon from any maker, even though it would be rare from the top brands. I have a Green Mountain I got on sale and it shoots about .500" average 5 shot groups at 50 yards with CCI standard velocity. It would probably do better with Lapua Center-X, SK Rifle Match , Eley Tenex etc.
I'd say some popular choices are Kidd, Fedderson, Lilja, Shilen and Lothar Walther. Depends on how much you want to spend.
