I'd go with your gun guy.
DS' are older guns.
I'm not too sure on the quality of the metal used to make the gun.
AFS
My gunsmith told me I should not use +P ammo in my .38 Special Detective Special. I was considering trying some of Buffalo Bore's "heavy" non +P short barrel ammo and he warned me against that, too, claiming that it was more on the order of +P+, rather than non +P. I did try it in another gun, and it was pretty snappy. Does anyone have any data or further info on Buffalo Bore and its suitability for use in my Colt's DS?
I'd go with your gun guy.
DS' are older guns.
I'm not too sure on the quality of the metal used to make the gun.
AFS