I have a Model 1400 MkII that I bought in 1970. SN# is N473xxx. The gun has not been used much and has been stored after encountering a operating problem. I have Googled this issue but haven't had much success.
The gun will not feed shells from the tube. I manually cycled a snap cap from the breech and the next round did not leave the tube. I am unsure of the mechanism that releases and then moves the next round up into the breech and what might be broken there to prevent that.
I have not attempted to load and fire the gun manually. I used the snap cap to verify that the firing pin strikes the shell when the trigger is pulled.
The gun has sentimental value and for that reason I want to get it fixed.
Any and all suggestions much appreciated.