I have 2 Criterion barrels. Intended for varmint shooting. Both 204 Ruger, 1 large shank for target action and 1 small shank for Mod12 Varmint. Both actions worked over and bedded. Both do 20 shot groups well under 2" at 200 yds (on a good condition day). Very satisfactory for my shooting and age. Good barrels. My 2 Benchmark barrels are slightly better but appreciably more expensive.