I am going to put together a rifle for shooting out to 600 yards(long distance for me). It will be used mostly for ground hog hunting, but it will also be used for some deer hunting. I am considering the 260 Remington cartridge. I want to be able to see impacts. I am considering a 700 Remington VSF in LH configuration and in 308 Winchester. This should be the right bolt for my 260?? The 260 cartridge should fit in the magazine?? Does this idea sound sensible?? Any recommendations?? Or cartridge recommendations instead of the 260 Remington. I believe I would want to shoot a 140 grain bullet?? What length barrel and twist should I go for?? IMO this is enough questions. Thank You, Tom.