Have a couple of 22 varmint rifles that appear to have a little larger bore based on the feel of cleaning patches. I mic'd some bullets & found that Sierra & Hornady varmint bullets are right on .224, Gentner & Bruno BR bullets were .2241, and Berger BR bullets were .2245. So, I will try some of the Bergers in these barrels. Anyone know of other varmint bullets in the 40 - 50 grain weight that are "fat", please let me know. Thanks