Since you said Remington 700 receiver, I would go Edge or Rum. I have never seen any Lapua RUM brass. The main reason to go with the 338 Lapua Magnum, is for the Lapua Brass. I have a Rem 700 in 338 Lapua, and if I could do it over again I'd do a 338 Edge and run the Nosler brass, which I...