So I know this is pretty common practice. My question is, is it worth it? I have a rem 700 that began life as a .220 swift. It was trued and has a PTG installed, Mini-m16 extractor, .473 boltface. I have been using it as my competition rifle. I am in the process of building from a custom action and want to turn the Remington into a SAUM based cartridge. I already have a dbm so feeding should not be a problem? My concern is safety. Is it safe to turn the frankengun listed above, and shoot it regularly, into a magnum short action? Also, Does it require anything more than opening the bolt face?