Fragmenting bullets versus controlled expanding bullets

[mt terry d]

However, for the type of hunting I do, I would be more concerned about high impact velocities at close range. Is this a valid concern? How does this small/light/fragmenting bullet philosophy play out at much shorter ranges, for example, almost point-blank range out to 100 yards?

I killed a coyote broadside at about 15-20 yards, 223, 77TMK
exit hole was @ 1 1/2" diameter.