Lyman Shotgun Bullet Mould / Sabot Slug - 12 Ga. Hollow Base

Cast your own 12-gauge shotgun slugs with the Lyman Shotgun Bullet Mould for hollow base sabots. If you're serious about reloading shotgun ammunition—whether for hunting, sport shooting, or experimenting with custom loads—this mould lets you produce slugs tailored to your gun and your needs. Built from solid leaded steel with a precision machined finish and heat treatment, it's engineered for consistency and durability across hundreds of castings.

The mould is designed for hollow base Foster-style slugs that don't require rifling, making it versatile for a range of shotgun bores and shooting scenarios. Its construction emphasizes longevity: hardened steel alignment pins keep the cavity square and true, while solid steel sprue plates (ground flat and secured with tempered steel spring washers) maintain reliable performance. Compared to iron moulds, the steel construction cuts break-in time significantly, so you're casting quality slugs faster from the start.

This is a tool for reloaders who want control over their ammunition. You'll need to supply your own wads—the mould works with standard shotgun wads—but that flexibility means you can dial in your loads to your exact specifications. It's the kind of equipment that rewards patience and attention to detail, delivering consistent results that rival factory ammunition once you dial in your technique.

Key Features

• Solid leaded steel construction with precision machining and heat treatment for durability
• Hardened steel alignment pins ensure cavity accuracy across many castings
• Solid steel sprue plates ground flat and secured with tempered steel spring washers
• Designed for hollow base Foster-style slugs requiring no rifling
• Faster break-in time compared to iron moulds
• Compatible with standard shotgun wads

Specifications

Frequently Asked Questions

What wads do I need to use with this mould?

The mould is designed to work with standard shotgun wads. You'll need to supply your own; the mould itself is the casting tool only.

Can I use this mould in a 20-gauge or other shotgun gauge?

This mould is specifically designed for 12-gauge slugs. It is not compatible with other gauges.

What makes this mould better than iron moulds?

The solid leaded steel construction with hardened steel pins and precision ground sprue plates delivers faster break-in time and more consistent results compared to iron moulds. The steel also maintains its accuracy longer across many castings.

Do I need a special press or equipment to use this mould?

This mould is the casting tool itself. You'll need standard slug casting equipment (furnace, ladle, etc.) and appropriate safety gear, but the facts provided don't cover the full setup requirements—consult Lyman's documentation or a reloading manual for your complete setup.