I found in the 11th edition of Cartridges of the World that United States Cartridge Company manufactured ammo from 1869 to 1936, so that I would think would put it between 1895 when the 30-30 was first introduced and 1936. It also states that Federal manufactured match grade 30-30 brass with a small primer pocket in 1986 called the 30 American to provide the basis for forming a series of wildcat cartridges. It is also heavier than Win. brass by 9 grs. according to my scales, which would be due in part anyway to the small primer pocket. I found this much out after I posted the question, so maybe someone else can shed some more light on this.
