Here's an exception to the chest shot hog. The Cutting Edge Raptor is designed to frag and the copper frags to a lot of damage. I chest shot this hog just to see and found out, they work pretty well.
Here's the link.
http://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/10719100/2I'm still a shoulder/neck/head shooter, but found this interesting.
DF