I've got three reamer drawings from Manson and JGS. The original Manson standard freebore was .095". It was updated in 2020 to .080". The JGS updated 2020 has a freebore of .0458".
I've got three reamer drawings from Manson and JGS. The original Manson standard freebore was .095". It was updated in 2020 to .080". The JGS updated 2020 has a freebore of .0458".