Originally Posted by
mjwcaster
Haven't seen it mentioned-
What are you using to measure the Boolits?
Micrometer or caliper?
A caliper will not show an out of round Boolits, just an average of the size of the Boolit.
I had leading when I started casting, Boolits measured OK with calipers.
When I finally broke down and got a micrometer I could measure the Boolits were out of round on the parting line, small on one side large on the other.
Just the small portion being under sized was enough to cause leading.
Just another thought.