I have not tested it yet due to it not being available in 45acp. We did test the hollow point versus heavy clothing though. We used hornady 45acp 230gr +P XTP rounds. We fired two rounds into a large water jug that was wrapped with 4 layers of 5.11 clothing fabric(light canvas). Both rounds did not expand, instead they shed their copper jackets as they enter the clothing, then the lead slugs are recovered at the bottom of the water jug. the lead slug had the hatch pattern of the canvas imprinted in the nose.
We then took two more Hornady rounds and filled the hollow point with wax. The rounds did preform better than the un-waxed hollow points when fired into heavy clothing.