If you adjust your sizing die to only bump the shoulder back .002" from the length of a fired case shoulder, your brass will last a lot longer!
If you spin the sizing die down to the shell holder and give it an 1/8th turn more, you'll likely buy a lot more brass due to case separation ...
Yep, adjust your sizing die for minimal shoulder set-back and you are much better off. I generally bump the shoulder back about .003" with my magnums, since they are strictly hunting cartridges. Especially the 300WBY.
