Ruger American 223 has a 1 in 8 inch barrel. I am sure it will stabalize 60 Gr plus but wonder how it will handel 55 Gr varmint bullets. I read in Handloader that a 1 in 8 inch could tear up a light jacket varmint round. I have decided I need a new rifle with a twist rate for both 55 Gr and heavier for larger game in a pinch and the Ruger American has alot to offer for the price. Any one have experience with this? Did not take me long to talk my self into a new rifle.