21st Century - Caliber Specific Expander Mandrel - .264"

Our caliber specific expander mandrels are available in.0005” increments in calibers 22 to 338 and will range from .001” above bulletdiameter to at least .003” below bullet diameter depending on caliber.  This will allow the reloader to find properneck tension to fine-tune their loads. The oversized expanders will also help straighten necks prior to sizingto improve concentricity.