I'm considering building a custom, med-long range (750 yards max) whitetail / mule deer / antelope rig. There's only one big requirement: It has to be able to shoot some type of factory loaded ammo that you're able to pick up at any hardware store in Backwater City, USA. This didn't happened to me, but a friend drove to Pennsylvania for a deer hunt only to discover that during packing his ammo can had been left at home. Do you know how hard it is to find 6.5x284 ammunition at the local stores in northern PA? Does anybody here shoot (or have a ballistic program) that could provide info on what kind of velocity to expect from Richard's 169.5gr & 195gr or Berger's 150gr? 26" barrel and a chamber loose enough that you don't have to neck turn your brass. And would I have to cut the throat long to accomodate the longer bullets, or is the ogive radius shallow enough to be able to use a standard throat? As far as choice of caliber: .270AI .30-06AI 7mm Rem Mag .300 Win Mag are about the only ones I could think of that you could be sure to find. O.K. Let me have it now. I'm a big boy, I can take it.