[Brian Pfleuger]

Interesting doo-dad but I can't see having a use for it, personally. Trimming is a simple, one time operation for me. I use the Lee case length gage and holder mounted in a cordless drill. All cases get trimmed to that length. I have never again had a case approach maximum length, over 8-10 reloads. I measure a few every time I load them. Even if the cases weren't too long for my chamber, I'd trim them once anyway, just for consistency.