I'm just about sold on behind-the ear shots for all hogs over 100 lbs. Simple shoulder shots for <100 lbs seems to roll them. Avoid longer shots in which they have cover nearby; they will run into it, dig in, and sometimes turn around and wait for you to come in, too...
Oops! It's Saturday-- you're already there... Good luck!
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Will you, too, be one who stands in the gap?
Matt