Rcbs Flat Nose Rifle Bullet Mould - Double Cavity .321" 170 Gr

If you cast your own rifle bullets, the RCBS Flat Nose Rifle Bullet Mould in .321" 170 grain is a workhorse double cavity mould built for serious reloaders. This is a traditional cast iron mould engineered to deliver consistent results shot after shot, whether you're loading for hunting, target practice, or historical rifle cartridges. The flat nose profile is ideal for lever-action and straight-wall applications where a blunt bullet design offers reliable feeding and terminal performance.

RCBS built this mould from solid cast iron blocks paired with a 3/16-inch solid steel sprue plate, the kind of no-nonsense construction that rewards years of dedicated use. The mould features tempered steel spring washers and screws that hold up to repeated casting cycles without loosening or wearing out. Each mould is ground to a precision square and meets strict manufacturing specs, so you get uniform bullet dimensions and weight from cavity to cavity. That consistency translates directly to tighter groups and fewer unexplained flyers downrange.

The double cavity design cuts your casting time in half compared to single cavity moulds, meaning you can produce ammunition faster without sacrificing quality. If you don't already have handles, RCBS offers them separately at low cost, so you can customize your setup to fit your bench and workflow. Whether you're reviving an old rifle cartridge or optimizing a handload for a hunting rig, this mould gives you the control and reliability you need to produce ammunition you trust.

Key Features

• Double cavity design speeds up casting production
• Solid cast iron construction for durability and heat retention
• 3/16-inch solid steel sprue plate for reliability
• Precision ground to strict specifications for consistent bullet weight and dimensions
• Tempered steel fasteners resist wear and loosening
• Handles available separately

Specifications

Frequently Asked Questions

What rifles and cartridges work with a .321" 170 grain flat nose bullet?

The .321" diameter and flat nose profile suit lever-action rifles and straight-wall cartridges designed for that bullet diameter. Confirm your specific cartridge's bullet diameter and profile recommendations before ordering.

Do I need handles to use this mould?

Handles are not included with the mould but are sold separately by RCBS at low cost. You will need handles or a mould block to safely hold and operate the mould during casting.

How long will this mould last?

RCBS designed this mould with solid cast iron construction, precision ground components, and tempered steel fasteners to provide years of reliable service when properly maintained and used.

Is this a single or double cavity mould?

This is a double cavity mould, meaning it produces two bullets per pour cycle, cutting casting time roughly in half compared to single cavity designs.