[markg]

Point of impact change due to temp change from season to season may vary depending on the type of powder your using. Here are some links about it if your so inclined to be interested.

http://longrangeshooter.com/2009/02/...fects-on-zero/

http://bulletin.accurateshooter.com/...-need-to-know/

http://precisionrifleblog.com/2016/0...s-imr-enduron/

http://bulletin.accurateshooter.com/...dgdon-extreme/