Thanks for the reply. Sorry for the hijack.
Do clean between trips afield? How about oil in the barrel? After hunting season I don't worry abut any of this, but during season I don't want to give the rifle any excuse for an arrant shot.
It's mostly mental I'm sure, but without full confidence in the equipment I don't deal well.
As to the cold bore zero, I try several different ranges on my drop chart, w/ the rifle totally cooled down before the shot, for conformation of my zero. I am more interested in where the 1st shot hits than the group per say.