The .36 cap and ball guns were a lot more effective than people today give them credit for. Way back then it was considered adequate for people stopping. Medicine was very primitive and getting shot with anything usually meant a slow death no matter. The little .22 short revolvers and derringers were super popular too and may have resulted in more deaths than all of the other handguns used combined too. The .31 snubby revolvers back then were also quite popular too. Don’t forget that John Wilkes Boothe killed President Lincoln with a .44 Deringer which was likely loaded with what we think was a pipsqueak load. But the bullet still got through his skull with authority. The little .32 long revolvers were common issued sidearms for police up until after WWII. The .32s in Europe were still being used long after WWII in Europe too.