StoneHendge Wrote:I'm completely lost as to how or what you are measuring, but I just measured one of my 90 gr TNT rounds. COAL is 2.20" and I'm about 0.03" off the lands in a tight chamber. The base of the projectile is right around the bottom of the neck of my brass.
I believe hes using the Sinclair measuring tool.
https://youtu.be/FYmVy-VhXgM

