Of all the 700 clones the Borden is the best platform for a shortmag, the Alpinemag is designed around the cartridge for feeding,magazine and port length, a well designed fire control system and Jim will time the trigger to the action so it has the correct firing pin fall, Jim's actions display flawless machine work and function great, + the rifle will likely shoot ragged hole groups if the shooter is up to the task, I have a 300WM built on a Timberline by Jim and is my go to hunting rifle because of the consistency!