7B14s

7B14s refers to a designation often found within the context of firearms, specifically referring to a type of rifle cartridge. The "7B" part of the designation typically indicates the caliber of the projectile, in this case, approximately 7 millimeters. The "14" often denotes the case length in millimeters. Therefore, 7B14s are a family of 7mm rifle cartridges characterized by a 14mm case length.

These cartridges are not as common as some other rifle calibers and are often associated with specific firearms or historical periods. Their performance characteristics, such as muzzle velocity, energy, and effective range, depend on the precise bullet weight, powder charge, and rifling twist of the firearm they are chambered in. Ammunition for 7B14s may be less readily available compared to more mainstream calibers, potentially requiring specialized manufacturers or reloading for enthusiasts. The exact historical development and widespread adoption of 7B14s can vary, with some variants finding niche applications or existing as less common designs.