cognac jack
New Member
Hi everyone, I am new to this site so forgive me if I screw up. I am looking for reamer specs on a 338 norma mag imp, mainly the body TPI, and the freebore for the 300 berger hybrid, and the neck size for a cartridge that the neck has been skim cut. I would like to build it so it has a 40 degree shoulder and the bearing surface, boat tail junction is above the neck ,shoulder junction. thanks for any help.