Lyman .35 (.38 Spl. & .357) Gas Check Gilding Metal Cup, Pack of 1000

The Lyman .35 (.38 Spl. & .357) Gas Check Gilding Metal Cup (Pack of 1000) fits the cast bullet base and protect it from hot powder gases. This crimp-on design gilding cup easily seated during bullet sizing, the gas check also permit higher velocities.