Re: AIAE Go/No Go Gauge Size?
Go and No-Go Gauges are based around the chamber, so the size will vary based on the caliber it is chambered in. A lot of people like to get the gauges at the same time as the reamer so they match, but I don't believe this is necessary. You can use a .308 go/no-go gauge set on any of the cartridges based on the same case, ie .243, .260, 7mm-08 et al. You can buy them from Midway or from Pacific Tool & Gauge.
Dave