I know reloading manuals always give a max case length dimension for each cartridge listed, but how would you determine this if you have a custom chamber? I have a 6-06 and have been using 2.494 as my max case length before I trim. This is based off the 25-06 saami spec in my Nosler Loading Manual. So far this number seems to work ok, but if I really wanted to determine what the max is for my chamber, how would I go about doing this? Could the gunsmith who built the gun provide it based on the reamer he used? Thanks guys. I'm a little new to the custom stuff, so trying to increase my knowledge base.