Below is a video I made of a sako extractor installation on a Remington 700 bolt. With this method I am able to increase , decrease or leave the same bolt face diameter of the current bolt face. Meaning a action/bolt assembly that was originally a .308 Winchester and would like to be re-barreled to a completly different caliber can have the bolt face decreased to .223 case size or up to the larger magnum just by boring out the bolt face to your preference. The video is in 2 parts because of it's length but it shows every step I take during the process. Hope you all enjoy.