Short awnser is YES. I was just reading some old Threads and there is one about a rifle Shawn Carlock built for a lady in 260rem and she took a nice elk at over 600yds with a 140g AMAX.
I know its not a popular show here but if you ever watch the best of the west they take elk at sick ranges with the 140g Berger all the time shot out of a 6.5x284 so with the speed you are getting in your 264win it should be a no brainer.
My 6.5-284 shoots the 140 VLD at 3K fps over a good load of RL-17. Everything so far is DRT, Accuracy out of the Kreiger 26" barrel is half inch.
DF
