Lost revolver Calaway and Horse (Red Dead Redemption 2)

Hello everybody.
This question ended the mission with a legendary arrow killed Calaway took his revolver in the directory of weapons became a record of it. Have played a little and exited the game when I entered the game again the gun of Kilauea lost none of the revolvers and from the directory disappeared from the record about it, but the job is definitely counted because a couple of hours of the game the money came from a writer for the book. Has anyone encountered this and is it possible to return the gun?

Also missing was a horse the whole game went to the horse obtained in the prologue, the horse was in perfect condition (in the sense of constantly cleaned and fed and trust was high), in the shelter of the shady Belle took a mission to Rob dilligence Mieke and bill, when the mission start they all went to horses instead of my horses is quite different from zero (trust me) but on the map it was listed as my and on it my saddle which was on the same horse. Maybe someone knows where is main a horse and how to get her back and is it even possible?