Its 71.5 not 171.5 is my first thought.
2nd thought is look at the powder batches and report back. What chronograph did you use in both instances?
Type: Posts; User: PerazziSC3
Its 71.5 not 171.5 is my first thought.
2nd thought is look at the powder batches and report back. What chronograph did you use in both instances?