Yes I realize that, but my question pertained to when they sanctioned their guns for the "New Express" loads which came into being in the 1920's with progressive powders & carrying heavier loads.
Lefever, Colt & Remington was out of business by then as was Baker except for late Folsom made ones. Ithaca dropped the weak framed Flues & introduced the stronger Nitro Special & then the NID. What changes were made by Fox, L C smith & Parker Brothers to accommodate the new heavier loaded shells or did their makers consider them already adequate?
