I plan on buying a Remington Sendero and I'd like to get some feedback on 264 Win Mag vs. 300 Win Mag for extreme long range hunting. I currently own a couple of 264s and have owned a 300 Win Mag in the past and like both calibers. The 264 is probably my all time favorite......being in the hunting business in South Texas for over 25 years, this has always been my go to rifle and the one that I carry when guiding. However, I'm just now getting into extreme long range shooting....up until now 500-600 yds has been my max range.....and I'd like to hear some opinions on these two calibers at ranges beyond these. I've looked up the BCs for both with several bullet makers and know in theory how they should compare, but I'd like to hear from those of you who have actually used them at those ranges. Also, what bullets have been the most effective.....clean kills are still top priority! We do a lot of doe management and hog eradication on my ranches and I plan to use this rifle for this purpose. Thanks in Advance for your help!