Re: .32 HPS?
Dan, I've done no research, recently, on your question, but will offer this.
Marlin, in the models 1891,1893,and maybe others, chambered what were current pistol calibers, in their rifles, many of which had a reversible firing pin, and bolt design, to accomodate it, allowing the use of either rimfire, or centerfire, cartridges, in a single caliber/case dimension. My JJ Donelly 'Handloaders Manual for Cartridge Conversions' makes no reference to such a round, implying obscure, or semi custom use of such a caliber,yet I have handled such a rifle, a '91 , chambered for .32 Long, with the rimfire/Centerfire reversible firing pin, though I do not recall such markings, on that rifle.
Hope this is of some help.
Don't start no s**t and there won't be none, Terry