Re: 1947LC Smith
Posted by Tom Archer on March 6, 2019, 10:21 am, in reply to "Re: 1947LC Smith "
The SSP (single sighting plane) rib feature was not introduced until 1938; so the top rib on a 1923 vintage barrel will be entirely different from that from a 1947 vintage gun. The SSP rib is more accurately described as a "solid vent rib"; obviously the SSP rib is not as high as a true vent rib, but is higher than the standard double barrel top rib. The raised SSP rib was an effort to make a double gun easier to shoot for some folks by giving the illusion that the shooter was shooting a single barrel gun. SSP gun frames are higher at the top of the standing breech in order to accommodate the additional height of the raised rib; and as David noted, although the odds are good that these barrels could be fitted to work with your gun, the odds are much higher that the rib extension on the early barrel set will not be high enough to completely fill the gap between the top of the rib extension and the standing breech. If so, your choices would be to either tolerate an unsightly gap; or if final appearance is important, have the frame annealed, cut down to fit the new rib extension; then have the gun frame re-cased hardened. Hope this answers your question.