[1] The 3-inch cartridge has survived to the current day as the .577 Nitro for Black, the same cartridge loaded with mild loadings of modern smokeless powder, carefully balanced through trial to replicate the ballistics of the Black powder version.

[2] The 23⁄4-inch, 3-inch and 31⁄4-inch cartridges were later loaded with smokeless cordite to create the .577 Nitro Express, with the 3-inch version becoming the most popular.

These cartridges were used for the heavier species of soft skinned game, including dangerous ones such lions, tigers and wild boar.

Its also useful under all but the most adverse condition against thick skinned quarries such as the gaur, cape buffalo and even elephants.

He further states "If I was concentrating on tiger or man-eating lion to the exclusion of anything else, I shouldn't hesitate: I would almost certainly have a double .577 [Black Powder Express] built....".