Lot's of posts about "center mass", etc. But that doesn't always compute for new shooters. So thought I'd offer up some specifics: The human body is mostly a vertical target (unless other than standing up). Which means you should concentrate more on getting your aim/point centered from left to right, rather than top to bottom. Here's what I mean: Point between the lines, and it will be a kill or incapacitating shot most times. Don't worry about vertical. You've got about 5" side to side and nearly 2 feet vertically.