The Sinclair gauges work. Or you can stop trimming until you jam a case. Or use a borescope to see the actual end clearance on the case. There are multiple ways to see what the case is doing in your actual chamber. There are several threads on here about how to do it.Hi QT, I'm down near Temple. Can you please reference what you are talking about (in terms of measuring chamber length) so I can research it. Thanks
Shoot it. You won't see any difference for the most part.