Built the wife a 10/22 with a Shaw barrel. As she uses it only for squirrels she is happy with the .625 average at 50 yards with mini mags. Screwing around with some Winchester sub sonics seems to indicate it will do better than that with ammo it really likes. Workmanship looks good and it does not seem to foul any worse than any other barrel. I was impressed enough that I ordered a centerfire rifle from them.