The .218 Bee was introdused by Winchester in 1938. The 218 Bee has a larger case and somewhat greater powder capacity then the 22 Hornet. It provides higher velocity and a greater effective range than the 22 Hornet, and in a good single shot or bolt action rifle, its just as accurate. It is one of the most economical small game or varmint cartridges available. On small varmints it can be counted on out to 200 yards, but on coyote, bobcat or the like, it cannot be depended on for one shot kills farther then 150 yards. On rabbits or other edible game it is necessary to use full metal jacketed bullets or reduced loads, otherwise it ruins much of the meat. 

This text is based on information from “Cartridges of the World”, Hodgdon reloading manual, the cartridge designer and/or own resources.