Pre-orders open — expect delivery within 8–12 weeks after placing your order.

Bullet Corp Expander Thru Plug

Are you loading coated bullets and still finding lead deposits in your barrel? Even with perfectly adjusted Lee Precision dies and flawless bullets, leading can persist. Bullet Corp has the answer: the Bullet Corp Expander Thru Plug, a precision-engineered solution designed and manufactured in-house to eliminate these issues.

This simple, drop-in replacement swaps out your standard Lee Precision Expander Plug, transforming your reloading process. Compatible with Lee Precision setups, it’s tailored specifically for coated bullets—ensuring accuracy and barrel cleanliness without compromise.

Why You Need the Bullet Corp Expander Thru Plug

Unlike the standard Lee expander, which only flares the case mouth, the Bullet Corp Expander Thru Plug, designed and crafted by Bullet Corp, delivers three critical functions:

1. Enhanced Flaring: Matches the Lee expander’s case mouth flare for reliable bullet seating.
2. Deeper Case Expansion: Expands the case interior just enough to perfectly accommodate .355” or .356” coated bullets, preventing damage.
3. Straight Seating Alignment: Guides the bullet into the case with precision, ensuring it seats straight every time.

These features protect the bullet’s coating during seating and—crucially—prevent swaging of the bullet base. Swaging, where the base is squeezed smaller than its original diameter, allows hot gases to bypass the bullet, cutting through the coating and exposing lead. This gas cutting strips away the coating’s lubricating properties, depositing lead in your barrel. The Bullet Corp Expander Thru Plug eliminates this risk, delivering cleaner bores and consistent performance.

Seamless Integration

Designed by Bullet Corp for reloaders, this plug integrates effortlessly with your existing setup. It maintains full compatibility with powder measures like the Lee Pro Auto Disk and Auto Drum, ensuring no disruption to your workflow. Rigorous testing confirms its reliability across these systems.

Key Benefits

• Prevents coating damage and base swaging, reducing gas cutting and leading.
• Ensures straight bullet seating for improved accuracy.
• Works with .355” and .356” coated bullets without altering powder delivery.

Usage Note

For optimal results, avoid using with Factory Crimp Dies, as excessive crimping can negate the plug’s benefits. A light taper crimp is recommended instead.

Upgrade Your Reloading Today

If you’re loading coated bullets, the Bullet Corp Expander Thru Plug—designed and made by Bullet Corp in Witbank, SA—is your solution to leading woes. Pair it with your Lee Precision dies and experience cleaner barrels and tighter groups. Get yours now and elevate your reloading game.