I had a professionally built model 7 with a factory Remington 700 Varmint .308 barrel that was worked, lapped, trued, crowned, and fitted, in an HS Precision Pro2000 Varmint stock, with a Jewell trigger in it. That rifle would literally shoot 1 ragged hole 3-shot groups @ 100 yards. When I say 1 hole, I mean it looks like you shot it one time, then missed the target completely with the other 2. It was insanely accurate. And that was with factory Hornady TAP 168 BTHP Match (red box LE ammo). I don't know what class it would shoot in, but the only thing aftermarket on that gun was the stock and trigger. Everything else was factory Remington parts that had been trued up.
That rifle was stolen back in 2008 when some a-hole ransacked my shop. I'd just about give anything to have that rifle back.