.308=drop them in their tracks no matter where you hit them. 5.56= deadly but shot placement is critical for drop in place. Most of the one I have taken have been under 75#’s but I did take a sow that was over 200# with the 5.56.
Sat out for two hours last night and didn’t see anything but I will give it another go tonight.
Here is the damage they can do in one night...in a short amount of time