Lyman .50 caliber, 370 grain Maxi bullet mold, single cavity, steel blocks only. Lyman Maxi bullet designs are exactly reproduced from the Thompson Center Arms design.
These precision mold blocks are made in the U.S.A. and tend to cost a bit more than other brands. They are nice quality. Special steel alloy mold blocks hold heat, for even casting temperature. Steel blocks almost never wear out, if properly stored. Today, all blocks are made in one size, large blocks for single or double cavity molds.
