A 11.5" or 12.5“ 300 Ham'r with 130g Speer HotCor or 110 Barnes TTSX would beat a 300 blackout or 223 for what you are describing all day long. A 7.62x39 would also but for me the only appeal to the x39 is cheap steel case plinking and spray and pray ammo. Brass cased hunting ammo is just as expensive as anything else. 300 Ham'r can be made from 223 brass if you reload or you can buy loaded hunting ammo for a reasonable price.