REDHAWK,
To tell the absolute truth I haven't deer hunted in several years. While it is illegal to hunt deer with 22 caliber or smaller here in South Carolina, I have always wondered what a 39 grain 20 caliber (at close to 4000 fps) would do if slipped behind the ear of a whitetail. If i were going to deer hunt again I would have to borrow my Son's 6.5 JDJ or maybe borrow my first ( Son got it for graduation from high school) the 375 JDJ.
If I really started deer hunting again regular, I would probably buy another 6.5x30-30 AI

Safe shooting
Doug