I have a Striker action that came in 7-08 Rem that I tore down for a build that got back-burnered for a few years. I want to put an Axis 350 Legend barrel on it, but was wondering if the magazine will feed the smaller cartridge. The 350L is just a hair larger than 223.

Other thought was the new 400 Legend that has a .422" case head. Does anyone make a bolthead in that size for the Striker?