RE: perfect caliber for wife?
My 300 WSM is a sweety.Easier on the shoulder than the 300 ultra.Undersize it and shoot for a Encore with a 30-06 barrel or an H&R 30-06...It only takes 1 bullet. Good Luck!
By the way - just bought an H&R nickel with a silver leoupold. The 22 inch barrel had be wondering.Tack driver no problem at 200 yards. My wife shoot a single shot rifle...she loves it.