I'll admit that I have not been aiming low like you just described. The ones that I'm talking about that have gotten away were all shot in the same place and it's higher than what you're talking about, probably right in the armor plate which I really didn't think would matter on the smaller pigs? I don't think the ones that I've lost even weighed 100lbs. Probably 60-80 tops? They are obviously tougher than I think, even the small ones. I'd rather have a blood trail to at least give an effort to look for them. As it is now, if I don't find them within a few yards of hitting the woods, as thick as it is in my area, I'll never find them.
This is a good example of where I try to shoot them:
I don't know if you can tell or not, but there's a red spot pretty much dead in the middle right behind the shoulder. Even this little bastard ran 25 yards.
I've still got about 150 black tips to shoot up, then 100 blue tips before I'm going to be ready to test anything heavier anyway.
Thanks for the tip.