i've been trying to order a 338 rum for about a year now and at every turn i keep getting "back ordered" so i'm considering a 338 win in a savage weather warrior, i had a ruger m77 (the older model with the thumb safety on the wrist. sold it miss it) but never considered a 338win a "long range" gun, more of a medium range smasher, if you were to start loading for long range 800-1000 yds where you start in regards to bullet choice and powder? i'm experianced in long range shooting using my rem 700p in 308 but looking for more down range horsepower.