These were originally used in "Enfield" pattern rifled muskets converted to centerfire. As stores of these were used up, purpose built rifles were manufactured in this caliber prior to the advent of the .450 cartridge. They continued to see service in the British commonwealth in reserve, training, native troops through WWI. This round/rifle was also relatively common in Canada, still being used on moose and bear and also with shot rounds in remote locations until relatively modern times. After WWII, various Enfield pattern rifles became cheap and plentiful and thoroughly displaced the .577. You still see a fair number of them hanging above the fireplace in Canadian hunting lodges, cabins and constabularies.