I'm getting ready to set up a switch barrel rig, and while I'm at it I'd like to get a barrel in 25 WSSM seeing as I already have reloading supplies for it. If I'm going to build a WSSM cartridge, do I "need" a large shank action? Are the new Target actions, with the 4.40" spacing capable of handling the WSSM? Can I purchase a Target action repeater? All I seem to find right now are single shots. Thanks.