I am trying to get my tooling together, I am finally gonna do it...I'm building my own Krink from a K-var kit. I don't have the kit yet, but I am ordering it this weekend (got to get paid first) anyway, I know that the kit has a virgin barrel and trunnion, so I will have to press it, headspace it, and drill the barrel pin. I know it is a little premature because I don't have the kit to mic. the barrel pin, but does anyone know what size bit is required and or the best type of drill bit to use?? Furthermore, anyone know just in general what the standard size difference you use for any type of press pins like for the FSB?