Ok folks, resurrecting this thread with new information. DoubleTap is now making 77gr SCHP (solid copper hollow points) in 9x25 Dillon that are going ~2100fps from a 6in barrel or about 2015fps from a 4.5in barrel. You can see a gel testing comparison between the 80gr Barnes discussed above vs. the new 77gr SCHP here. The 80gr is going a bit slower, but sheds peddles at 2000fps+ as Doc surmised it might. The 77gr SCHP has been designed properly for such high velocities and does not shed peddles, and has impressive penetration and expansion. I have since bought a drop in barrel and dies to test 9x25 Dillon (which is a ton of fun) and am getting the 77gr SCHP to around 2100fps from a 4.5in barrel with handloads.
In light of this new information my question for the experts here is: Is a 77gr .355 bullet traveling at ~2100fps that expands to around .66in and penetrates to around 14in creating temporary caviation wounding similar to smaller rifle rounds (like say a 62gr expanding soft point from a 10.3in AR)? Based on Doc's answer above my guess is "yes" but I wanted to confirm since I am no expert.
On a similar note, is there any way to tell if a bullet is causing TCW as a layman with ballistics gel? That is about all the testing I can do myself.