Lee Round Nose Rifle Mould - Double Cavity Handles Included .324in 175 gr LEE. The primary benefit of this mould is the aluminum construction. This material is known for heating up and cooling down fast resists rust and is lightweight. Unlike blocks made from iron or steel known to cause the bullet caster to tire this mould does not have the same effect. Even the block halves are crimped for producing great bullets. Specifications for Lee Round Nose Rifle Mould - Double Cavity: Manufacturer: Lee Fabric/Material: Aluminum Package Contents: Lee Round Nose Rifle Mould - Double Cavity Lee LEE90274: Round Nose Rifle Mould - Double Cavity Handles Included .324in 175 gr