I am new to forum and a new owner of a frontier six made in 1881. It is chambered in 44-40. I tried to load it today and the rounds wouldn’t go in. They got stuck about half way in. I took out the chamber and they fell right in. It looked like as I put the chamber pin all the way in it moves the chamber to the point they wouldn’t drop in. Is their a specific alignment for the chamber? Any help is much appreciated.