My .02 . In my hunting time to here through 10 or 12 "buddies" only 3 were righties when shooting anld only 2 were left handed that said 1 of the lefties shots righthanded (kids!). Didn't anybody see Private Ryan . Cross dominance is a non-issue in speed and you can as I learned to "3 finger" the bolt exactly like the PR sniper . Only a cock on closing Mauser ever caused me not to use that method .Sadly my left eye is failing me and ( I haven't ever winked my right eye without my left closing too )I have been forced to learn to shoot right handed ( now that I have a closet full of left hand guns ). I now shoot both eyes open scopes ribs peeps irons and my dads recurve . Peeps are the hardest by far and shot guns the easiest . I shot left handed for over 30 years the last 8 have been a struggle . Snap shots still find the left shoulder .