When originally produced by Winchester Repeating Arms (WRA) and Union Metallic Cartridge Company (UMC), it was manufactured with a "metal patched" (jacketed) lead bullet weighing 160 gr. One year later, UMC produced a 170-grain bullet offering. Both 150- and 170-grain bullets continue to be very popular, as seen in the number of these weights offered by current manufacturers. However, the 160-grain bullet weight has reappeared in modern cartridges from Hornady, as noted below. Jacketed bullets for the .30-30 are .308 inches in nominal diameter. Cast lead bullets for the .30-30 are also popular and usually are .309 inches in diameter.