Im looking at getting a Remington 700 SPS Varmint. Im set on the gun, Im just trying to decide on the caliber. I want the rifle for long range precision shooting. Around here i probably wont find many occasions to shoot more than 500 yards. Mostly I'll be shooting at paper. Possibly some small to medium sized game and more than likely deer will also be on the receiving end of this rifle. I'll be reloading for whichever round I decide on. So what are the Pros and Cons of each round out of this rifle? p.s. the local shop has the .308 version in stock at the moment.