Thank you Miller.

This is a No. 0 "Good 2 Iron" 16g Smith with chambers lengthened to 2 7/8" with end of chamber WT of .102" right and .105" left, that still bulged; with what load is unknown

[Linked Image from photos.smugmug.com]

X-ray of bulge

[Linked Image from photos.smugmug.com]


Part of my confusion was related to my 1906 12g Armor Steel Smith that I discovered to have chambers of 3 1/4" after forcing cone lengthening. The end of chamber WT was still .118" right and .112" left. Clearly the pre-lengthening WT was substantial.

Looked some more in my records and found a Parker 12g Grade 3 2 frame with D4 barrels with chambers extended from 2 5/8" to very slightly more than 2 3/4" - end of chamber WT .100" right and .114" left.


As said over and over, lengthening British 2 1/2" game gun and U.S. maker's small bore chambers should be done only by a barrel expert and with great caution.

Last edited by Drew Hause; 11/01/22 11:49 AM. Reason: Images restored
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