Even with the radical progression in modern cartridge design, the venerable .375 Holland & Holland is still on top.⁠ ⁠ The round was released in 1912 by the British gunmaker Holland & Holland. This was a time of tremendous innovation with sporting and military arms. Smokeless gunpowder was still relatively new, having made its debut in the 8mm Lebel in 1886, and gun makers were experimenting with smaller-diameter cartridges for use on large and dangerous game in Africa and Asia. Continental European gun makers had stolen a march on their British counterparts, in particular German gunmaker Otto Bock who created the 9.3x62mm Mauser in 1905. That round was built to work with the magazine-fed Mauser 98 bolt gun and caught on with sport hunters. To this day it remains a popular round for European big game, such as moose and boar, and retains a following in Africa, Canada, and the United States. The British needed to put a dent in the 9.3×62’s popularity and Holland & Holland’s answer was th...