Not really help for you but I am using a Lee case trimmer setup, the whole thing is under $20.00, shell holder cutter and gauge.
It trim from the head and all my brass comes out right at 1.750 every time.
The shell holder go in my cordless drill, first I trim then chamfer, then debur and take the shell out and put another one in. Its not the faster system in the world and definitely not the slowest but it sure is accurate.
I believe that when you trim cases they should be trimmed for OAL, not just from the shoulder.
I was thinking about he Possum Hollow quick trim, but the Lee is easy to use and right on with the length.
Last edited by rebs; October 17, 2012 at 07:07 AM.