laker, Of course, I'm asking you to believe me (and you don't know me from Adam) but, I'm pretty sure that most of my shots (should I choose to make them)....taken as a "Texas Heart-Shot" would exit the chest. A Barnes TTX from my rifle! I'll repeat the story. Some may wish to "change the channel" as this is a rerun!
Around '93, my first hunting season using Barnes Bullets ( the original X Bullet). I took a "Texas Heart Shot" on a rag horn bull elk @ approx 75 yards .....running straight away.
There are several reasons for taking the shot. First, I had less than pleasing results on big game with standard cup and core bullets. The second reason, I had heard great reviews of the "new" bullet by the "smith" who built my rifle. Lastly, it would be a relatively extreme test of the X Bullet's integrity.
The bullet entered just left of the "brown spot" (first hide penetration), through the ham (rather dense muscle), shattered the pelvis ( fairly heavy bone), continued thru the paunch area ( 18 to 20+ inches of wet grasses), thru the diaphragm, continued thru the left lung, exited (2nd hide penetration) at the foreleg leg arm pit (for lack of a better term), reentered the inside of the foreleg (3rd hide penetration), completely penetrated (dense muscle) and stopped under the hide. Had I properly placed the bullet....it would have likely exited the brisket, and I'd not had the opportunity to recover the bullet! The recovered Barnes X retained .952%. of it's original weight. Not to shabby, for a bullet that endured a rather "hostile" environment!
Addendum: For you folks that like "frangible" bullets, perhaps you should check-out the Hammer Bullets. It gives you the best of both worlds....early "fragmentation" with substantial weight retention for continued penetration! memtb