I am always on the lookout for defense loads that offer the possibility of decent stopping power with less felt recoil. There has long been a buzz from current and former cops that the 110-grain Cor-Bon DPX rates as a preferred load for light-frame snub guns. Part of the idea is that lighter bullets generate less felt recoil, all else being equal. Another portion of the idea is to have a light, non-fragmenting, mushrooming bullet penetrate deep enough into body-tissue to damage something important, but stop short of exiting. From a snub gun, the DPX all-copper-hollowpoint is alleged to achieve all of that more reliably than does a lead or a jacketed-lead-hollowpoint.
Out of a surfeit of curiosity regarding the felt recoil, I purchased 100-rounds (5 x 20-round boxes) of Cor-Bon .38 +P 110-grain DPX. I will not be practicing with wholesale amouts of these very expensive little pills but they will be nice to mess around with once in a while.
My personal "Holy Grail" .38 Special loads have long been, and will likely remain:
1) Federal 125-Grain Standard Velocity Nyclad (for alloy S&W J-Frames, and both alloy and steel Colt D-Frame revolvers)
2) Winchester, et al 158-grain +P lead semi-wadcutter hollowpoints for steel J-Frames.
What little I gleaned from the 15-rounds of DPX that I fired during this range session is kinda what I figured going in, with one BIG exception; a surprising departure from the Cor-Bon of my younger days was that there were NO SIGNS OF EXCESSIVE PRESSURE! The spent casings easily extract from the cylinder and the primers show no flow. Cor-Bon pushes the DPX bullet from the muzzle as fast as it needs to go but no faster. That impressed me the most. As expected, DPX recoils a noticeable bit more than the Nyclads (even though my Nyclads are NON+P, they are not exactly what I would call puff-puff loads) and DPX recoils a noticeable bit less than 158-grain +P LSWCHP. Which load would end a threat the quickest? My guess is money-back-guaranteed to be no better than your guess.