I have not recovered a round ball but it was in the guts somewhere. .570" .. speer or hornady, I forget which. Launched by 120 grains of Goex FFg and an RWS magnum #11 cap. I shot the deer almost head on, slipped the ball into the crease at the base of the neck, punched the heart and liver, and went somewhere "south" beyond that without exiting. I have never seen so much blood, 'course, it was my first and only deer in the snow which made the red all that much more visible.
Tom
