I right handed .22 bolt rifle should not be much of a concern since the spent casing ejection would be done without the face in the path of ejection. If it was a semi I would understand the concern.
Really? Do many lefties use their left hand with the mouse?or he could do what I did... Shoot right handed rifles and adapt to a right hand world.
I also use a default right handed mouse with my left hand... As someone who works on other users' computers every day, its less maddening trying to remember to switch back and forth. (I actually used a left handed mouse I got for my birthday for an entire weekend of gaming. Got really good at using it. I was frustrated for a week at work trying to adapt back to right handed mice. I had to go back to my right handed mouse)