Just saw this on wiki
Bisleys were serial-numbered in the range of 156300–331916, in the same sequence as the Single Action Army.[19] All Bisleys after No. 161,376 had "BISLEY MODEL" with the caliber stamped on the left side of the barrel, which is rare for older Colt revolvers.[19] The most common calibers were .32-20, .38-40, .45 Colt, .44-40, .41 Colt, and the British calibers .450 Eley and .455 Eley.[19] A total number of 44,350 were manufactured. Production of the Bisley was terminated in 1912, but serial No. 331916 was shipped after the First World War.[19] Most Bisley Standard Model Revolvers shipped to a United States address were not used for target shooting, but for self-defense, because the grip and hammer were ideal for fast shooting.[10][19]
Surveys of existing Bisley show that a much larger number of 4+3⁄4″ Bisleys, perhaps as high as 62%, have survived as compared to the 5+1⁄2″ and 7+1⁄2″ barreled guns. Considering the majority of Bisleys were made in .32/20 and .38/40, some 60%, it appears that the market for SAAs was changing. The late 1890s with increased urbanization in the West suggests the possibility that many of these pistols were companions to the lever-action rifles of the same period and that the low slung hammer, less humped backstrap, and short barrel may have suited the city-dwelling suit-coat-wearing clientele who still found themselves outdoors not only on horses but in buggies and automobiles. The need for man-stopping bullets was decreasing in urbanized environments, although in semi-urban areas, a pistol like the Bisley would be suitable for discouraging both four-legged and two-legged "varmints" while also suitable for collecting supper along the road. The Bisley may mark a movement to a more civilized West.[citation needed]
I thought last part was interesting and plausible.