Quote Originally Posted by charb52 View Post
isnt that what he is saying he thinks changed between batch #'s of the same bullet?

Correct. That is my conclusion as I've tested several lots of 308 amax and smk and found little variation in them. The 6.5 amax are also varying quite a bit in the same lot. .016 from 20 I tested. The smk are within .001. Wish I had some left from 1st lot but unfortunately I don't.