Picked up a 94 Big Bore Winchester a few months ago and finally got time to work up some loads. Was becoming very frustrated because I was getting 10" groups at 100 yards with all different loads. They seem to be stringing horizontally.
I finally discovered that if I let the barrel cool down between each shot, the groups would shrink to about 3". (acceptable with my eyes)
Anyone have any Idea what I can do to rectify this ?