RE: Where should i place the cross hairs?
Depends how much a little left you are talking(with aim point), but I assume in that 1' range so that should put you both lungs. I would say your pulling your shot or really not seeing the crosshairs before pulling the trigger...causing a illusion on where that bullet is aimed. I would say practice, use some sort of resting aid and be sure to see the crosshairs on you position of POI before squezzing the trigger. A buddy of mine had the same problem, was squeezing before the sight window and crosshairs matched up resulting in a far back shot everytime. The way he fixed it was range time and take his time to make sure that he was seeing what he was thinking...not the other way around.