I understand the sentiment, however these are similar length to the 140 class bullets and they're typically 300fps faster MV, similarly faster downrange, and they don't break apart like a lead core bullet does so you get a retained piece of copper going faster, weighing more, and penetrating further.
Several bull elk were taken this year with it. The only one that was shot more than one time was gut shot first, the high shoulder shot anchored him DRT. Doesn't really matter what bullet you gut shoot an animal with, the wound is not instantaneously mortal nor does it break any major skeletal structure that stops the wounded animal from running away. The high shoulder shot dropped the 7x7 instantly with the 122gr bullet.