Bell said he bought the pistol he was carrying when he was 16. He looks to be in his late 30s. The show is set in the 1870s. That type of pistol wouldn't have been invented in the 1850s.
Identical twin Harry is tired of being mistaken for his wanted brother Pete. The show ends when Pete is buried in an unmarked wilderness grave. This will not end the confusion, and Josh won't get $500 bounty money.