Marshal - are those rimfire cases?
Howdy, Pard!
No, those are military, inside-primed "copper" (actually gilding metal) cases, as witness the stab crimps near the base. The crimps hold in the Martin bar or Benet cup centerfire primers. If you look at the head of the case from the back end, it
looks like it's rimfire, but it isn't! The military used the same type of construction on the .50-70 and .45-55/70 Gov't ammo produced by the military arsenals. It wasn't until about 1883 or so that drawn brass ammo was adopted by the Army and outside primers were adopted. Of course, commercial brass-cased ammo with external primers was available about 1873.
The inside primed, copper-cased ammo was supposed to be more waterproof...and maybe it was...but the soft cases expanded and when the chamber fouled with black powder residue the fired cases tended to stick! This was more of a problem with the rifles than with the pistols as the fired cases were pushed out of the Colt's and if necessary you could pry the fired rounds from a Schofield pistol.