I have only been on 2 kills (both 1 shot) w/a 30-30, Mine was w/a 170 Speer FP and the other w/a factory 170 gr. Rem CL. Both at about 70 yds, both through the top of the heart, neither left their tracks. I was impressed as I have probably seen 75 deer killed in my life and maybe only 10% died in their tracks no matter where there were initially hit or how many times.-Muddy