Boxer I always appreciate info and am more than willing to take any "hints" someone doesn't mind sharing. I'm not sure which part "changes when I leave the pasture"? Do bullets react differently on game depending on the terrain? Or is it the type of game found when leaving said pastures? Deer is mostly what we have to hunt here in the south. I'm by no means trying pimp Berger bullets or anything else for that matter just saying they worked well on a few samples.