Currently have a 308 chambered with "Tompkins" reamer. Finding freebore to be too short, and must seat deeper in cases than I want. Using AI mags. Gunsmith is going to change it for me, was wondering what amount of freebore would be ideal. Not too worried about jumping smk's but wanting to be close to lands with some of the bullets that like to be. I realize there is no one universal answer but would like a good all around throat.