Except at close range, with a pig feeding undisturbed, I'm pretty uneasy taking a headshot. Usually they are constantly darting around, and to me it's too easy to miss the brain and wound it.
The last three I dropped all fell to shoulder shots. One a 7.62x39 that broke a shoulder and did not exit on a ~80 lb sow. A 190 lb boar caught a 120gr Ballsitic Tip from a 7mm-08, breaking his shoulder, but not exiting. Last was a ~60lb boar that got hit with a 200gr Hornady FTX out of a .35 Rem. That one hit a couples inches behind the shoulder, exited, and bled like crazy. All three pigs dropped right there, but only the one hit with the .35 Rem bled much. Think I like bigger bore, moderate power rounds more than the speedsters.
Knowing they have smaller vitals than a deer, I want the bullet to go directly between the front shoulders. If broadside, break a shoulder, if quartering, aim so it just misses the near shoulder but goes toward the off shoulder, ruining everything in-between.
