Thread: 6mm creedmoor criterion pre fit issues

Very unlucky to have both a tight neck and short throat in a ‘SAAMI’ chamber.

Consider running a neck reamer up it to get the neck clearance you need for the brass you intend to use. Seat a projectile in a piece of Nosler brass and measure the case neck diameter. Add a minimum of 0.004” and that’s the chamber neck diameter you need.