Jamison

The 303 Savage is a rimmed, center-fire cartridge developed by the Savage Arms Company back in 1894. It was designed as a short-action cartridge from the Savage Model 99 hammerless, lever-action rifle and was one of the early adapters of smokeless powder. They eventually changed the bullet diameter from 0.311" to 0.308" diameter before serial No. 43,898. Check or slug your bore if you own a early model 99.