I bought the 111 LRH in 7mm Rem Mag last spring. I topped it with a Vortex Viper PST
6-24x50, spent the summer developing drop data with 168 gr Bergers at 3080 fps, and had a custom turret on it by fall. I couldn't be happier with it and expect the 300 Win Mag will perform excellent as well. I shot an elk at 225 yds, two pronghorns at 400+, my buddy shot a prongorn at 485, and another buddy heart shot a cow elk at 600 with it. I really like the muzzle brake
too as the recoil is cut in half which allowed me to shoot it a lot and develop really good drop tables. Those things together gave me high confidence! I bought lots of components before the "craziness" started and hope to develop my skills out to 800 this summer. Good luck and keep us posted!