Quote:
Originally Posted by Dean Romig
I’m saying that the quickest and easiest way to determine frame size is to measure the distance between firing pin centers in sixteenths of an inch, also shown on the pages you have included Edgar.
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This really isn't accurate. At best, it may have been true, pre 1900, but with the addition of the 1 1/2 frame size, which fell in between the existing One, and Two frames, the firing pin spacing is the same as the Two Frame.
Again, in 1928, with the addition of the Half Frame, which at least numerically fell in between the 0 frame, and 1 frame, the firing pin spacing is is 1 1/16", the same as the One frame.
Since the question remains unanswered as to whether the subject gun in the original post was a 2 Frame, or a 1 1/2 Frame, using the firing pin spacing and the tables, the question remains a question, because regardless, the firing pin spacing, Horizontally, is still 1 1/8".
Because the standing breech dimension between 1 1/2 and 2 differs, the firing pins may be striking slightly off center, in the Vertical plane.
So, using the firing pin spacing alone may get you to the right neighborhood, it might not get you to the right house.
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