A Merkel B3 Drilling chambered in 7x57R — the rimmed version of the 7x57 Mauser, designed for break-action rifles. The 7x57 was one of the most influential military and hunting cartridges of the 20th century, earning fame in Africa where Frederick Selous and W.D.M. Bell used it to take thousands of head of game. The rimmed 7x57R case is optimized for single and double guns, feeding reliably without the bolt mechanism that the standard rimless case requires. Merkel's 22-inch configuration is ideal for driven game in European forests. Type: Drilling Action: Break-Action Caliber: 7x57R Capacity: 3 Year introduced: 1988, Germany Weight: 110 oz Overall length: 38" Status: Active Intended use: hunting, combination, driven_hunt