I agree with you all on sticking to standard 38 Spl. loads for any of the Colt Detective Specials. However, to make things interesting, I have an older Colt factory catalog (#A-79-5) that gives as " recommended" ammunition for the Detective Special (not the Police Positive Special,Cobra or Agent) the following: .38 Special Mid-Range, Regular, and HI-SPEED. Now the hi-speed back then, I believe, was considerably "hotter" than any of todays .38 Spl. +P !!! Just an observation, but interesting nonetheless.