Why Sagebrush Molds are Better
Mold blocks are made from a continuous cast gray iron similar to ASTM A48 class 40. This material is well suited for applications requiring high resistance to wear and response to heat treatment. The cast iron has a very uniform, dense, fine grained microstructure due to the continuous casting manufacturing technique where molten metal is pushed through a die instead of being cast in the traditional manner. Many mold manufacturers use pre-made blocks such as RCBS and are limited to bullet length. Our larger blocks prevent the bullet nose from being too close to the block edge and allows for better heat distribution.
The sprue plates are hardened for preventing the sprue plate from galling with the top of the mold block. The sprue plate is a thick .25” to allow more alloy forced into the mold.
The blocks have three sets of nitride hardened taper lock pins to insure perfect alignment and high wear resistance.