Lee conical rifle molds for Black Powder Cartridge Rifle (BPCR) . Lee has added several new molds to their BPCR selections. The original government bullet was designed by Spence Wolf after extensive testing for the Trap Door Springfield. All Lee molds are made of aluminum and come with handles. The mold cavities are lathe bored for unmatched roundness and size control. Only Lee guaranteed roundness of .001 or less. Most bullets from Lee molds can be used as cast with our sizing. The above pictures represent the bullets cast from these molds.