OK I have it bad.
So Bad I have begun to weigh brass .
Which leads me to the question I have.
I shoot a lot of 7x57MM Mauser.
Back when I started ( don't ask when) I formed all of my brass from LC63 Match brass.
Weighed a lot of it today and get as much as a 5 grain span in weight.
As I am always trying to get better and better groups how much diference would the 5 grain span make ?
All else staying the same
ie:
boolit
primer
powder charge
Would the 5 grain diference make that much change?