I don't see any tests for this, but I see a similar loading by Double Tap that Brass Fetcher tested being sold by Underwood now. 155gr Gold Dot at 1500fps

Brass Fetcher's test:

https://www.youtube.com/watch?v=QtFvSC9WCQM

This should be slightly hotter, and some of us have longer barrels than the G20 so this round may not make the 12in minimum. Sure seems nasty though! I may need to buy a box.

EDIT: I searched wrong, The Chopping Block has a good test here! https://www.youtube.com/watch?v=YRkKoe3g9lA

Amazing expansion and very nasty, but only 9-10in or penetration. Pretty cool!