I am thinking about building a 375 Chey Tac, more than thinking really, I'm getting ready to order a Stiller TAC408 action. I can't figure out for the life of me, and I've spent most of the day looking for it, who makes bottom metal for the extra long action. Anybody got any links to where it can be had? I really don't want to do a single shot, I own enough of those in bench guns and Schuetzen rifles as well as BPCR rifles.