No, not saying that. The .300 would do the job for sure. just saying where the brain is located. We trap hogs all the time, and when we kill them we use a .22LR, but we place the bullet between the ears not the eyes, and they drop like a ton of lead.
mark an X between the right ear and left eye and the left ear and right eye; hit the center of the X and you got one dead hog.center of the brain.