by SCJ429 » 21 Jan 2021, 9:05 am
Have you spoken to a gunsmith to see what he has access to? If I was after a super accurate wildcat 6mm, I would look at a 6mm BR Dasher.
If it has to be based on a 223 case, then the case necked up to 6mm would work well. Your gunsmith would just run the standard 223 reamer up your 6mm barrel and then use a neck reamer to compete your chamber.