If the modern JHPs I mentioned dont open up, and thats a huge IF, the permanent crush cavity will be virtually identical to that of a wadcutter. A JHP that fails to expand will cut to the slightly narrower meplat, but the taper will still crush the full diameter.

That said, the 3 loads I mentioned do open up, even at the snub nose velocity because they were designed with snubs in mind, the fact that they will work well in full size revolver is gravy. On the other hand, the FBI Load wasnt designed as a snub load nor was it designed for the FBI specifically.

I can get you protocol test data for the 3 loads, but I cant gurantee pictures. When I find the data, I'll the numbers and abbreviations.

For those that like the Speer 135+p losad, but are having a hard time finding it, the 130+p PDX-1 from Winchester might be a viable choice. As soon as Dr Roberts releases the data set, I will pass it along.