ORIGINAL: BrutalAttack
In case you didn't know you don't want your bullet to exit at all. You want it to expand and transfer all of it's energy into the target while at the same time tearing as large a wound profile as possible. A perfect performance would have meant you would have found your bullet lodged against the opposite side somewhere.
Using my .300 Wby I once shot a deer at about 15 yards with a 180 gr. Scirocco. The bullet flattened out tremendously and lodged under the hide on the offside. It was right in the boiler room where you're supposed to hit 'em. So, a theoretical 2 tons of energy transfered, yet this deer managed to run 75 to 100 yards. On the other hand, except for one deer I gut shot accidentally, I've never had one run that far after being shot with a bullet that exited. What does that mean and what's it worth? Maybe nothingsince some folks will report different results. I just know for sure that I prefer exit wounds.