I hope someone can help me out with this. Have a .284 win shooting Berger 180vld hybrid with h4831sc and it seams very sensitive to temperature change. 10 degree makes a big difference .150 group to somewhere around .750. And yes it just takes a powder change to get it back to tune. If i shoot loads tuned for a certain temp it groups great and it repeats. So what is the problem? I am looking for a suggestion for maybe a powder that would be less temp sensitive. The current load the bullet is .010 off the lands does seating depth affect the sensitivity of this at all? Would it be better to be off the lands more or less to help with this problem? Thanks for the help.....