velocity doesnt equal chamber pressure. please be aware of that.
the corbon issue, they tested a specific corbon +p offering in 45 colt in a single taurus judge. the only thing they did was measure the gun all over with a digital micrometer before and after firing a few hundred rounds. they did not find any changes in measurement.
i sadly admit it doesnt prove MUCH as to longevity. however the rossie circuit judge is not in the official taurus lineup and doesnt come with the taurus website/catalog of "+p proven"