RE: short range caliber
HDW............Glad you brought that up......Kinda been thinking the same thing myself. If recoil sensitivity is a problem, any advice to switch to shotgun/slugs is gonna make things worse. Lighter calibers are probably the best route, combined with a heavier total gun/scope weight. Some of the "featherweight" rifles out there can give a pretty good jolt just for that reason. A combination of lighter caliber and heavier package should help a lot.