I put a Bushnell Banner 3-9x40 on my Ruger 10/22. I know the scope is a little overkill for a .22 but for the price, I couldn't pass it up. Should I sight the scope in at 50, 75, or 100 yards. This is solely for squirrels and nuisance critters here. Most extreme shot is 100, average shots are 50-75. See my problem? Post up, let me know something!