watch "the best of the west". i think they have a website too. they shoot 7mm mags and 300RUM's over 500 yards on griz, elk, etc on pretty much every show. they have a dvd on how to set up your gun and practice to shoot that far too. they promote the products they use as they sponsor them but would probably be a good start for you. i watched him shoot a griz at 647 yards with a 7mm mag. smoked it both shots and it died real quick so there you have it. i myself can't even see that far. btw, he was using a 20 pwr scope too.




















































