I’ve read the .38 WCF was introduced by Winchester in 1874 as the second chambering of their Model 1873. That is incorrect. It was the second chambering offered but the year of introduction was 1879. Colt didn’t get around to chambering it in their revolvers until 1884. Another interesting fact is that Colt continued to chamber it in their large-frame revolvers such as the New Service and Model 1878 double actions. Very few other handgun manufacturers of that era made .38 WCF revolvers. S&W did so with their New Model No. 3 and later N-frame Hand Ejectors but the totals produced were meager.

Regardless, .38 WCFs sold well. It was the Colt SAA’s third most popular chambering among the 1873-1941 first generation of production. That amounted to a bit over 50,000 counting standard SAAs and Bisley versions together. Back about 1993, Colt reintroduced the .38 WCF in the SAA’s options. I had one of the very first and have owned several others. Two are permanent keepers: one with 5-1/2-inch barrel and one with 7-1/2-inch barrel. Whereas First Gen Colt SAA barrel/chamber mouth dimensions are all over the map, all Third Generation ones that I have personally measured are uniformly 0.400-inch across the barrel’s rifling grooves and 0.401-inch at the chamber mouths. Mine are among the most accurate .38 WCF handguns I’ve ever fired from machine rest.