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The Lee Precision .58 Caliber Single Cavity Bullet Mold is a reloading tool for casting 478 grain round balls with a 0.578" diameter, built for black powder shooters and Civil War reenactors who need consistent projectiles. Its single cavity is CNC machined for roundness and size control, so each ball drops true to diameter.
The aluminum block heats up and cools down faster than steel or iron and weighs about a third less, which reduces fatigue across long casting sessions and keeps the mold cycling quickly between pours.
Key Features
Brand
Lee Precision
Product Type
Bullet Mold
Caliber
.58 Cal (0.578")
Bullet Weight
478 Grain
Bullet Style
Round Ball
Cavities
Single
Material
Aluminum
Manufacturer SKU
LEE-90478
UPC
734307904784
Condition
New
Highlights
Casts .58 caliber (0.578") 478 grain round balls
Single cavity aluminum block
CNC machined for roundness and size control
Rust-resistant aluminum heats and cools faster than steel or iron
About 33% lighter than comparable steel or iron molds, reducing fatigue
How to use
Preheat the aluminum mold block, then pour molten lead into the single cavity to form a 478 grain round ball. The CNC machined cavity controls roundness and size, and the aluminum block cools quickly so the ball can be released and the mold refilled without long waits.
Frequently asked questions
What diameter round ball does this mold cast?
It casts round balls with a 0.578" diameter, matching .58 caliber black powder firearms.
How many cavities does the mold have?
It is a single cavity mold, casting one round ball per pour.
What material is the mold block made of?
The block is CNC machined aluminum, which heats up and cools down faster than steel or iron.
