"LC Smiths used different frame sizes for each gauge in FW and the only crossover in the Reg frame series is 16/20g."
Brian, be careful in saying they used different frame sizes in the Featherweight frames, I measured a .410 and it was wider at the water table than a 12 ga. FW.
The Regular frame was larger than the FW frame but most parts were interchangeable.
No correction needed in my statement.
LC used 4 separate frame sizes of featherweight frames. One for each gauge. 12, 16, 20 and 410.
That is as per the dimensional drawings in Brophy’s book.
