Yep that.s right..i have a guy that is bringing me a savage action and a criterion barrel, I have never messed with a savage, will I need a go gauge? Or can I just use a piece of brass? He is ordering the twist he wants but in 223 and I will run a 22 creedmoor reamer in to open.
If you are doing it for someone , USE GAUGES ! your name and all you own are on the table .
If you're doing your own work, do it any way you want to, you probably won't sue yourself if something goes wrong. But, if you work for others, use the proper and approved industry methods, 'cause if something does go wrong they can/will sue you! Is that blunt enough and to the point reasoning for you guys to understand?!