These three centerfire rifles will be backed up by a Remington 870 Express Super Magnum Synthetic (26-inch barrel with modified choke) along with a Ruger 10/22RB (standard model) & a G19. I want to be able to hunt anything in North America. What would your choices be (more or less a small bore, medium bore, & big bore)? I'm not really talking about the brand of rifles, only the calibers. I'd appreciate your opinion.