Hi guys, just got a GP 100 and have some 38 cases with some extreme plated 158 grain swc's. I have about a half pound of 700x laying around and found the Hodgdon data I believe says max is 3.7 (book not in front of me) then start at 10% less than that. They also only list a hornady xtp for oal. My question is where do you get your overall length numbers? Or do you just seat to the canulure? Also any other recommendations for a new 38spl reloader, I am using a hornady lnl ap with their dies. Incase that info is needed.