I just took these from my phone, so sorry they are blurry. I took both of these bullets from elk which I downed. The one in the center is from 07 and the Powerbelt bullet I used, the bullet is completely flat! This elk was only about 30 yds away and was recovered under the skin on the left side (broad side shot from the right). The bullet hit two ribs, one on the right and one on the left, and penetrated the heart and both lungs. 295 grain bullet, 90 grains powder .54 Hawkens.
The bullet on the far left was recovered from my elk in 08 and went through the right shoulder, the heart and fractured the left shoulder bone. The bullet was found in the chest cavity but we could easily tell where it hit the shoulder. 275 grain TC Maxi-Hunter w/ 120 grains pyrodex .50 in-line. The elk again was broad side maybe 50ish yds.
I would much prefer the bullet to mushroom like that of the TC bullet vs. completely flatting out.

I now shoot the TMZ bullet.
