I'm buying a Regulation Police that'll shoot that ammo. The best part of having the ammo first is that you get to take your time and research which guns work best with it, and you can select the style that'll fit you're shooting style as well.
Most of you are familiar with .38 S&W Victory Models being reamed to accept .38 Specials. Well one day in 1940 the Brits told Colt to ship every .38 and .45 they had on the shelf, period. Colt obliged sending among them a handful of Single Action Army Models, some Officers' Models and some Police Positive Specials. FYI they also made the Official Police in .38-200, so marked. I have been fortunate to acquire this Officers' Model.
It was reamed to take .380 Rimmed (.38 S&W), the muzzle was counter bored slightly for some reason (shown in Pate's book). It bears all the Enfield and proof tattoos as well as the 38/380 conversion mark. And after all that it spent a very gentle uneventful war.
Never happened to me, I have quite the 1911 handgun collection, .357 revolvers and a few ak rifle...I have been leaning towards long range shooting these days so it is safe to say i have a handgun of caliber at my disposal and it will be extrememly difficult to have ammo that i don't have a gun for.