I think this is basically aimed at the guy who
A. has one or seven 9mms and likes the cheap practice ammo, but
B. wants to launch bullets into the 'light 45 ACP' weight class.
In my opinion this would more easily accomplished by buying any of dirt cheap police trade-in 40s that will accept an aftermarket 9mm barrel.
Neither A or B apply to me but the project demonstrates how handgun bullets have improved in 40 years. Hell I can remember when full snort 158 grain 357s didn't expand any better than these 185 grain 9mms do.
