Dillon 9mm Expander Thru Plug – GoldPlus Edition

Are you loading coated bullets on a Dillon press and still seeing leading in your barrel? Even with correct die setup and quality bullets, leading can occur when the case isn’t expanded correctly. Bullet Corp fixes this with the GoldPlus Edition Dillon 9mm Expander Thru Plug — a precision-engineered, in-house manufactured upgrade designed specifically for coated bullets and high-volume reloading.

This is a direct drop-in replacement for the standard Dillon powder funnel/expander. It upgrades your expansion process without changing your workflow, while dramatically improving bullet seating, consistency, and barrel cleanliness.

Why You Need the Bullet Corp Dillon Expander Thru Plug – GoldPlus

Unlike the standard Dillon expander, which focuses mainly on powder activation and minimal flare, the Bullet Corp Expander Thru Plug performs three critical functions correctly:

✔️ Proper Case Mouth Flare – Provides a clean, consistent flare for easy bullet placement

✔️ Controlled Internal Expansion – Expands the case body to correctly support .355” and .356” coated bullets

✔️ Straight Bullet Entry – Guides the bullet squarely into the case for perfectly aligned seating

This prevents coating damage and base swaging. When a bullet is swaged smaller during seating, hot gases escape around it, cutting through the coating and exposing lead. That gas cutting is the real cause of leading — not the bullet itself. The Bullet Corp Expander Thru Plug eliminates this problem at the source.

GoldPlus Upgrade – Built for Serious Reloaders

This Dillon GoldPlus model includes:

• Reinforced Hardened Core Withstands heavy use, tough brass, and progressive press abuse without deformation.

• Advanced Surface Technology A premium molecular-level performance coating that delivers superior lubricity, corrosion resistance, and wear protection far beyond standard tool finishes.

• Friction-Reducing Finish Reduces drag, resists powder fouling, and allows smoother case travel through the press.

• Extreme Durability Designed for tens of thousands of cycles — ideal for IPSC shooters, competitors, and bulk reloaders.

Seamless Dillon Integration

Designed specifically for Dillon 9mm powder systems, this expander maintains full powder-through functionality and integrates seamlessly with Dillon powder measures. No changes to your setup, no compromises to powder consistency. Extensively tested to ensure reliable operation under progressive reloading conditions.

Key Benefits

• Prevents coating damage and bullet base swaging

• Reduces gas cutting and barrel leading

• Ensures straight, consistent bullet seating

• Hardened core for long service life

• Advanced surface treatment for smoother operation

• Optimised for .355” and .356” coated bullets

• Full powder-through compatibility

Usage Note: For best results, avoid excessive crimping. A light taper crimp is recommended. Over-crimping — especially with Factory Crimp Dies — can undo the benefits of correct expansion.

Upgrade Your Dillon Setup

If you’re loading coated bullets on a Dillon press, the Bullet Corp Dillon 9mm Expander Thru Plug – GoldPlus Edition is not optional — it’s the correct way to do it. Designed and manufactured in Witbank, South Africa, this expander delivers cleaner barrels, better consistency, and fewer headaches per round.

Built by reloaders, for reloaders.