I dunno about how far a hog can or cannot go with or without heart or lungs destroyed. That being said, I can go with what I do know. having grown up in So. Texas (Bracketville area), I have shot well over 500 hogs with everything from 22LR to my .338 Lapua, 50 & 54 cal ML, bow and pistol. I have seen hogs even headshot that did not drop for some time due to miscalculations in drop and placement. I have personally shot a hog with a with a .308 using a 165 grn Nosler Bal. Tip at 2200fps out of my Lone Eagle pistol at 37 yds and travel over 150yds with both lungs and heart blown out!!!!
I also know for a fact of being a Sniper for several LE agencies for now over 18 yrs, that an individual cannot sustain life for more than several seconds and continue with a placed shot into the heart from any high powered weapon due to the kinetic energy displaced into the chest area and central nervous system. The only way to immediately cease all forward movements are to place a round into the "T" ( Between the eyes, and down to base of the nose) and it is over immediately. We have gone from .308 Winch. with 168 grn BTHP to now the .338 Lapua with 225 grn BTHP and they are incrediable!!!!!!!!