2 of my Savage Model 12's are semi twins. I already had my Model 12 F-class 6br & was able to do a gun trade last week & added now my Model 12 Bench Rest in 6BR. The 6BR Norma is my favorite caliber. I named the F-class "Mayhem" & the Bench Rest "Chaos". I shot "Mayhem" this past Saturday in my first ever 600 yard bench rest event. It was a local range event in our neighboring state using the IBS 600 yard target. We had 11 shooters in the factory class & I won. Next trip I go in a couple of months I'll see what I can do with "Chaos".