Welcome to the .264 club,! You will love it. I have used one almost exclusively for 30 years for big game up to eland size. Shoot good 140's and it is a good elk round. It is my go to rifle when I need something to reach out and topuch something!! Enjoy!!
I got the 264 bug back in 2001. I purchased a Ruger M-77 with a 24" barrel, and then replaced it with a 26" barrel. I never reloaded myself I use to have Alabama Ammo load rounds for me. I killed mule Deer, Elk and Pronghorn. I let my buddy my rifle and it got stolen. Last year I bought a 7mm Remington Magnum in Weatherby Vanguard and I had it rechambered to 264 Winchester Magnum with a 26" Shilen barrel. I purchased. A lee Breech Lock press and started to do my own loads.
You will love the 264wm, it preforms well with 130gr.AB on whitetails, the recoil is light and they shoot very good. I wil try the 140AB to see it they will shoot as good. The 6.5 bullets 130gr., 140gr. Are freight trains with high SD and you got to love them, they just work.