The photograph was taken from the right side, looking in toward the firing-pin hole.
Representative Boggs. Just the way you are holding the revolver now?
Mr. Cunningham. Yes, sir; just the way I am holding it now.
Representative Boggs. With the cylinder removed?
Mr. Cunningham. With the cylinder removed.
Mr. Eisenberg. Now, there is a cylindrical-shaped object in the center of that picture, Mr. Cunningham. Could you describe what that is—right in the center of the picture?
Mr. Cunningham. That is known by two different names. It is known as a hammer-nose bushing, or a recoil block. It is—Smith and Wesson presses this particular block in. It forms the hole through which the firing pin comes out of the breech face.
Mr. Eisenberg. That is, the firing pin strikes the center of the cartridge, or the primer, as it is called?
Mr. Cunningham. Yes.
Mr. Eisenberg. Which causes the cartridge to fire. Now, what is the magnification of the photograph of the breech face?