looking to finish another AR build and wanting a caliber can hunt with. I have looked at ballistics for everything 6.5, 6.8, 7.62x39, 25-45, and they all pretty much suck but comparing the cost of the upper and barrel and availability of ammo and minimal mods is leaning me toward the 300. Where I am hunting with it will be inside 100 yards and have no desire to shoot suppressed. At 100 yards the 300 has only 1000fp of energy right on par with the 5.56. Wondering how effective it is to actually hunt with. 25-45 looks promising but complete upper is 800 and ammo harder to find. 6.8 grendel has ballistics close to 243 but uppers are double the 300 and need new BCG. anybody have any insight?