The Lee Precision 90585 Powder Thru Expanding Die is a single-piece reloading die designed to charge cases while expanding the case mouth. It is intended for use with a powder funnel adapter or with Lee’s Auto Disk or Pro Auto Disk powder measures. Constructed of steel and supplied as a single die, it fits into presses that accept Lee-style dies. Manufacturer materials reference compatibility with both .45 ACP and .45 Winchester Magnum in product naming.
Key Specifications
- The die is listed as compatible with .45 ACP and .45 Winchester Magnum.
- The die type is specified as a Powder Thru expanding die.
- The kit includes 1 die.
- The die’s construction material is listed as Steel.
- Carbide is listed as No.
- The product dimensions are listed as 1.60 x 1.70 x 4.70.
- The listed height is 1.6000.
- The listed width is 1.7000.
- The listed length is 4.7000.
- The listed shipping weight is 0.3563.
For reloaders seeking a compact, straightforward powder-through expanding die, the Lee 90585 offers a practical option for charging .45-class cases while flaring the case mouth for seating. Its single-die format and compatibility with Lee powder measures make it a useful addition to a reloading bench focused on repeatability and efficient workflow.









