I bought into the scout rifle concept in the 90s, and built a short action m70 to meet Cooper's recommendations. If I had to do it again today I would look at a kimber action, 1-4 conventional scope w/cattail (lit #4 reticle), AICS/Alpha detachable mags, in a McMillan Edge. DBM eliminates the need for long eye relief, and the 1-4 extends the useable range considerably. I still find ching slings the go-to for any field rifle. For caliber I'd consider 7-08, 260, or 6.5 Creedmoor.