Excellent advice, Ruddyduck...

I shoot a lefty version Remington 870 12GA and think it is the best thing around. My old Marlin 30-30 however, is righty and it doesn't bother me one bit. I just tip the chamber slightly to the side to eject the spent shell. No biggie.

Now for a centerfire rifle, I do want to pick up a nice .270 or 30-06 one of these days and you can bet it will be a lefty bolt model!