I have been working on this thought for a while and have really had good success with this type of shot placement.
I started out shooting wild hogs (I have killed around 100 so far this year) with cast boolits behind the shoulder. Most I have recovered, but many have escaped even with a proper shot. While butchering one out the other week, I noticed that brain shots were kind of "hit or miss" pun intended. behind the shoulder was ok on the larger ones, but the smaller ones dont have the rib to expand the boolit. Through the shoulder works, but some larger ones absorb that impact like a sponge and still run off to die. So what would work well from most broadside angle shots and still leave the hog in its tracks?
The solution came by accident, really. A hog's neck joins the skull in the middle of the neck unlike at the top like a deer. I killed 6 hogs last Saturday all with the same shot placement and I am convinced it works. A hog standing broadside has the neck bone running down the middle of the neck and intersects the skull at the joint between the bottom and top jaw, kinda like where the bottom of our ear is. That is how they get all their strength to root and fight. Even running this shot is not hard. Put the sight below the eye about 3 inches and shoot. Pushing a boolit through all that jaw bone (and buddy, it is a lot) mushrooms it well on any size hog. If the shot is high, you will either clip the spinal cord or crack the skull around the brain. If it is low, you get arteries. Farther back, you still score vertebrae and forward you will get the true intersection of the neck and head. Either way, you get about a 4 to 6 inch area that even with nominal expansion will yield a DRT pig. (Dead Right There).
I know that six animals is not a definitive test, but any of you hog hunters want to try it, it has worked well for me so far! Give it a go!!