The only 22cal projectile I've killed whitetails with is the 55gr Hornady SP and it was at 22-250/220Swift speeds. A buddy of mine has used the same bullet with much success from a 223Rem he purchased for his nephew. He had to try it out and convince himself it was capable of taking deer before putting it in the youngster's hands. He has also used the 64 Nosler BSB but said it was much more destructive than the 55 SP. He went back to the Hornady since it kills just as well with less meat loss, and it's cheaper. Cheaper leads to more shooting practice.
