[castnblast]

Another thought on this...If you load into the lands, ALL your components will shrink at colder temps. Theoretically, it should be the same, but it's not because you have different alloys/metals that shrink/expand at different rates. That is why I do not load my hunting rounds into the lands. I try to find a powder charge that will shoot well to standard COL measurements. That helps to cut down/eliminate a lot of that type of problem. Also, I use a bar scale, so I make sure to zero out my scale everytime I load. expansion/contraction effects them to, and it takes a much smaller temp change to make a difference on those scales.

It's also a good idea to practice shooting w/ your hunting clothes on. Heavy jackets and all. It's not like shooting from the bench, so don't expect the same patterns. I like to practice w/ my bipods and off hand at the range to see where my true limitations are. Seems to help.