The Hornady PTX Universal Powder Drop Expander (part no. 290037) is available in a range of diameters, including .355, .357, .400, .430, .451, .452, .475, .500 inch, and others, for use with a Quick Change Powder Die or a case-activated powder drop. With this expander in place, a separate case-mouth expander die is no longer necessary — the expander simply inserts into the powder die, the powder drop sits on top of it with the powder measure above that, and the case mouth comes out expanded to the exact diameter you need in the same step you’re already charging powder.

Key Specifications

• Available in multiple diameters from .355 to .500 inch.
• Works with a Quick Change Powder Die or case-activated powder drop.
• Eliminates the need for a separate case-mouth expander die.
• Expands the case mouth in the same step as powder charging.
• Simple insert design, no tools required to install.

Frequently Asked Questions

Do I still need a separate expander die? No — this expander does that job as part of your powder drop station, eliminating the extra die.

Does this fit any powder measure? It’s built for a Quick Change Powder Die or a case-activated powder drop specifically.

Buy the Hornady PTX Universal Powder Drop Expander

Combine case-mouth expansion with powder charging in one step. Order from our Lubbock, Texas gun shop for fast, insured shipping, and browse the rest of our reloading supplies selection.