10×71

10x71 refers to a specific caliber of ammunition, a 10 gauge shotgun shell measuring 71 millimeters in length. This designation is more common in Europe than in North America, where shotgun shell lengths are typically expressed in inches, such as 2 ¾ inch, 3 inch, or 3 ½ inch. The "10" signifies the bore diameter in gauge, and the "71" indicates the length of the brass head on the shell, measured in millimeters. While 10 gauge is a powerful shotgun bore, the 71mm length is less frequently encountered in modern sporting or hunting contexts compared to longer 10 gauge shells. The 10x71 might be found in older firearms or specific niche applications, often associated with European sporting traditions. Understanding these different measurement systems is crucial for identifying compatible ammunition for specific firearms.