Here's more info Garrison Joe. 1954 production with 23/4 chamber. I have used win. Light target,win. Aaauper sport sporting clays and rem. STS light target shotshells. After firing I can't unlock the action with the slide release because it is stuck and doesn't return to the down position so I can manipulate it to unlock it. I actually have to strike the butt plate on a hard surface to unlock it. Thanks for the help Buck🤠