Chamber depth

[Charlie Diehl]

Garth and Dean. Thanks for your posts. I am not necessarily certain that I have measured the chamber depth correctly. That is why I have asked for comments and suggestions. I do not have instruments to measure or detect any taper. I have simply measured into the point where I encounter a shoulder 2-3/4” from the breech that implies the bore diameter for the first 2-3/4” is larger than the bore diameter beyond the shoulder.
I have another 28ga Parker (vintage 1905) that has no detectable shoulder inside the bore and that would make it more difficult to determine actual chamber depth.

[Bill Murphy]

Yup, John Davis is correct in mentioning that John Dallas's statement was incorrect. In Parker terminology or practice, a chamber measuring 2 3/4" is meant for a 2 7/8" shell or shorter. Of course, the 2 7/8" shell is no longer loaded, but in the twenties to the late forties, it was loaded and Parker guns were made to shoot it. Your gun could have factory 2 3/4" chambers.