Mr. Hoof,,, maybe I'm the one confused,, but most of the "OHP" ( hwy. patrol),and law officers in my area have switched to .40 cal., and mostly " GLOCKS",also Homeland security,from what i'v read or heard. But ! now that you are here ,my 72 is in 38 spl. sooooo what say you about a 9mm. cyl., in our 72's. Would this still be too much on our frames???
The 45 Colt operates at less than half the pressure and in the case of the 9mm+P about one third...........neither the steel nor the arbor threads would hold up.