I've killed several deer with a .22 mag already and several more with a .22LR and 5mm Remington magnum rimfire. I won't know what the biggest critter I'd use it on will be until I run into one that needs killing with the .22 mag. in my hands.
Neck shots? What bullet?
Neck shots, head shots and lung shots. Various 40 grain solids in .22LR {head shots only} Winchester 40 gr JHP's in .22 mag. { head, neck and lung shots} and Remington 38 gr PLHP's in the 5mm {neck and lung}. Never had a lung shot deer go more than 75 yards with .22 mag.. the Win 40 gr. JHP will penetrate completely through the chest cavity/lungs of a 140 lb. deer broadside. All shots taken inside 60 yards except for one head shot at 80 yards.
