Lee Precision 90440 Mold Double Cavity Round Ball .451 Capacity 2 Bullets

The Lee Precision 90440 double cavity round ball mold is a serious tool for shooters who cast their own ammunition. Whether you're working up loads for a caplock rifle, muzzleloader, or historical firearms, this .451-caliber mold produces two finished bullets per cycle—doubling your casting efficiency compared to single-cavity designs. It's built from aluminum that resists rust, heats and cools faster than steel or iron alternatives, and comes with handles so you can get straight to work without hunting down accessories.

The casting block halves are CNC-machined to tight tolerances, which means less chatter, fewer defects, and smooth, uniform round balls that chamber cleanly. Aluminum's thermal properties matter here: quicker temperature cycling means you spend less time waiting between pours and more time producing consistent ammunition. For handloaders and cast-bullet enthusiasts, that translates to higher volume without sacrificing quality.

Lee Precision built a reputation on delivering function at a fair price, and this mold reflects that philosophy. You get CNC precision, included handles, and the durability to handle years of casting—all without the premium price tag of boutique molds. If you're serious about cast-bullet reloading, this double cavity mold is the kind of workhorse tool that justifies itself in the first hundred bullets.

Key Features

• Double cavity design casts two .451 round balls per pour
• Aluminum construction resists corrosion and cycles heat quickly
• CNC-machined block halves reduce fatigue and produce uniform bullets
• Handles included—ready to use out of the box

Specifications

Frequently Asked Questions

What caliber round balls does this mold cast?

This mold is designed for .451-caliber round balls, commonly used in muzzleloaders and blackpowder rifles.

Do I need to buy handles separately?

No—handles are included with this mold, so you can begin casting immediately.

Why choose a double cavity mold over a single cavity?

A double cavity mold produces two finished bullets per pour, significantly increasing your casting throughput without requiring two separate tools.

Is aluminum a good choice for a casting mold?

Yes. Aluminum resists rust, weighs less than steel or iron, and heats and cools more quickly—which means faster casting cycles and less idle time between pours.