I have an American Gun Co (Crescent) 28 gauge hammer double. Weight with 26" barrels is 5 lb. I do not have a 28 gauge chamber gauge but chambers are definitely longer than 2", I am pretty certain they are 2 7/8". Gun's serial number is 5695, all matching.
Measurements are as follows.
Breech Width = 1.867"
Breech Height = Approx 0.940" ( Barrels do not have flats, Action Bar rounded to match barrel radius)
Firing pin centers = 0.950"
Bar length = 1.633 ( there is a slight step down to knuckle portion just as if it had flats. This does not include knuckle)
Total Bar Length = 1.938".
Width of Bar = 1.260"-1.245" (Tapered).
Width of Bar = 1.190"-1.650" ( Forward Sculpted Section).
Bar Depth = 0.715" (This is the maximum depth of the bar, taken by laying a parallel across the outer edges & then measuring with calipers across the center of the bottom of the bar & subtracting the thickness of the parallel. The bar does not appear to taper in-depth, it is slightly radiused in cross-section, thus slightly deeper in the center).
Circumference over /Breech = 6 1/8". This taken with a cloth measuring tape pulled snug).
Even with my small hand, I can touch my thumb & middle finger but NOT my Fore/Trigger finger & thumb. While a bit heavier than the above two mentioned, I believe this would still qualify as a dedicated 28 gauge frame. This is about the max weight I would want in a 28, any heavier & it would be better as a 20, far more versatile & cheaper to both buy & shoot as well.
Last edited by 2-piper; 10/14/19 03:40 PM. Reason: Typo corrections
