magmaengineering.com.au
Home
MAGMA SPARE PARTS
Magma Molds
  • 30 CAL
  • 32 CAL
  • 380
  • 9mm
  • 38 CAL
  • 38 Super
  • 40 CAL - 10MM
  • 41 CAL
  • 44 CAL
  • 45 AUTO
  • 45 COLT
  • 50 CAL
  • 25 - 20
  • 32 -20
  • 32 - 40
  • 38 - 40
  • 38 - 55
  • 40 - 65
  • 44-40
  • 45 -70
  • 475 - 480
  • Round Ball
SPG Motors
Oriental Motor
AirTac
Koganei
Autonics
magmaengineering.com.au
Home
MAGMA SPARE PARTS
Magma Molds
  • 30 CAL
  • 32 CAL
  • 380
  • 9mm
  • 38 CAL
  • 38 Super
  • 40 CAL - 10MM
  • 41 CAL
  • 44 CAL
  • 45 AUTO
  • 45 COLT
  • 50 CAL
  • 25 - 20
  • 32 -20
  • 32 - 40
  • 38 - 40
  • 38 - 55
  • 40 - 65
  • 44-40
  • 45 -70
  • 475 - 480
  • Round Ball
SPG Motors
Oriental Motor
AirTac
Koganei
Autonics
More
  • Home
  • MAGMA SPARE PARTS
  • Magma Molds
    • 30 CAL
    • 32 CAL
    • 380
    • 9mm
    • 38 CAL
    • 38 Super
    • 40 CAL - 10MM
    • 41 CAL
    • 44 CAL
    • 45 AUTO
    • 45 COLT
    • 50 CAL
    • 25 - 20
    • 32 -20
    • 32 - 40
    • 38 - 40
    • 38 - 55
    • 40 - 65
    • 44-40
    • 45 -70
    • 475 - 480
    • Round Ball
  • SPG Motors
  • Oriental Motor
  • AirTac
  • Koganei
  • Autonics
  • Home
  • MAGMA SPARE PARTS
  • Magma Molds
    • 30 CAL
    • 32 CAL
    • 380
    • 9mm
    • 38 CAL
    • 38 Super
    • 40 CAL - 10MM
    • 41 CAL
    • 44 CAL
    • 45 AUTO
    • 45 COLT
    • 50 CAL
    • 25 - 20
    • 32 -20
    • 32 - 40
    • 38 - 40
    • 38 - 55
    • 40 - 65
    • 44-40
    • 45 -70
    • 475 - 480
    • Round Ball
  • SPG Motors
  • Oriental Motor
  • AirTac
  • Koganei
  • Autonics

38 - 55

Lube Groove - designed for wax-based lubrication or polymer coatings

MAGMA MOLDS ARE TEST CAST USING: 6% ANTIMONY, 2% TIN, 92% LEAD

38-55-245 RNF BB

Cast Diameter: .381 - .382

Sizing Diameter: .379

Description: COWBOY

38-55-255 RNF BB

Cast Diameter: .381 - .382

Sizing Diameter: .379

Description: COWBOY

Our molds are engineered specifically for commercial-grade casting. To provide the reloader with maximum flexibility and the tightest possible tolerances, all our molds are designed to cast oversized. ALL projectiles require sizing to meet your firearm's specific bore requirements

Contact Us

Better yet, see us in person!

We love our customers, so feel free to visit during normal business hours.

magmaengineering.com.au

03 5939 4977 sales@magmaengineering.com.au

Hours

Open today

09:00 am – 05:00 pm

Copyright © 2026 magmaengineering.com.au - All Rights Reserved.

Powered by

  • About Us
  • Privacy Policy
  • Shipping & Returns
  • Ordering

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

DeclineAccept