Pretty much each rifle has it's own set of rules. I have been lucky enough to own some rifles that didnt have much of a problem down to -10 F. Some others of mine were very unpredictable in 40-50 degree F., others had cold bore shot issues that were more predictable. The best thing to do is get to know each one of your rifles.
Originally Posted by Broz
Please just answer one very simple question. Why would anyone shooting long range load a low BC , low SD 168 gr offering in a 300 win???????
My answer to this is. The only reason is to make the 7 RM look good. There is no other reason.