Bertrams brass.

    A RCBS Rockchucker is required. The standard die bushing is removed, and replaced with a large body die bushing.

    I'm not aware of any other brand of press that can take a large-body die bushing, but if there is, you can use it.

    RCBS make 500 Jeffery dies. The large body press bushing is top right. A Factory Crimp Die is optional, but works very well for crimping, especially monolithics. That is a custom order from Lee.