My better half has given me the green light to have two guns built. One I have decided to be a 243 AI. I would like to have a 338 RUM built too to shoot the new 250 gr Bergers. Looking for a repeater with a McMillan A3-5. I need to stay within a budget too so custom actions are probably out. I also want to have 28" barrel length with brake and a contour similar to a Remington Sendero. Any advice on what parts to start accumulating, most important, the action? Thanks.