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Lee Precision

LEE 90371 MOLD DC C312-185-1R

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Lee Double

Cavity Mold for casting round

Produces .312

Diameter, 185 grain bullets

Suitable Cartridges

Like 303B

Includes Handles

Check Your

Reloading manual or powder manufacturer

$39.89
List Price: $41.99
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SKU: 90371-734307903718

Overview

This double-cavity mold is intended for reloaders who need to produce .312 diameter, 185 grain round nose bullets for cartridges such as 303B. It is a straightforward tool for those building ammunition around a specific bullet profile rather than seeking a general-purpose mold. Handles are included, and load data should be verified through a reloading manual or the powder manufacturer’s website before use.

Why Hunters Choose the Lee Precision

Double-cavity Mold

Design supports casting two bullets

Produces .312

Diameter, 185 grain round nose

Suitable Cartridges

Like 303B

Handles Are

Included with the mold

Clear Reminder

To verify load data in

Key Features

  • Lee Double Cavity Mold for casting round nose bullets
  • Produces .312 diameter, 185 grain bullets
  • Suitable for cartridges like 303B
  • Includes handles
  • Check your reloading manual or powder manufacturer data for load information

Best Used For

  • Reloaders casting .312 diameter 185 grain round nose bullets for compatible cartridges like 303B
  • Shooters who want a double cavity mold for producing bullets in smaller batches
  • Handloaders who already consult reloading manuals and powder manufacturer data for load development
  • Users needing a mold that includes handles and a straightforward bullet-casting setup

Specifications

Bullet Diameter.312
Bullet TypeRound Nose
Bullet Weight185
Cavity CountDouble Cavity
Handles Includedtrue
Load Data GuidanceCheck your reloading manual or go to a powder manufacturer's website for load data.
Suitable Forcartridges like 303B

Pros

  • Double-cavity mold design supports casting two bullets per cycle
  • Produces .312 diameter, 185 grain round nose bullets
  • Suitable for cartridges like 303B
  • Handles are included with the mold
  • Clear reminder to verify load data in a reloading manual

Considerations & Trade-offs

  • Designed for a .312 diameter, 185 grain round nose bullet, so it is intended for specific cartridge applications rather than broad, all-purpose use.
  • This is a double cavity mold, which supports casting efficiency but may be more than needed for occasional or low-volume use.
  • Load data is not provided here; the product notes direct users to consult a reloading manual or powder manufacturer website before use.
  • Handles are included, but other mold and bullet specifications are limited to the information supplied in the listing.

Suggested Comparisons

  • Bullet molds
  • Reloading dies and tools
  • Cast bullet supplies
  • Handloading accessories

Suggested Accessories

  • Bullet lubricant
  • Reloading manual
  • Bullet sizing die
  • Casting pot

Frequently Asked Questions

What bullet does this mold produce?

It produces a .312 diameter, 185 grain round nose bullet.

Is this a single-cavity or double-cavity mold?

This is a double cavity mold.

Are the handles included with the mold?

Yes, handles are included.

What cartridges is this mold suitable for?

The description says it is suitable for cartridges like 303B.

Does the product include load data?

No load data is included in the product description. It directs you to check your reloading manual or a powder manufacturer’s website for load data.