The RCBS 12801 Full-Length 2-Die Set Group A for 260 Remington is the foundational tool kit every reloader needs to produce consistent, reliable ammunition. This two-die set handles the core steps of the reloading process: full-length sizing and bullet seating. Whether you're a newcomer building your first loads or a seasoned hand maintaining a proven cartridge, a quality die set like this one is designed to last through multiple barrel lives and hundreds of reload cycles.

Full-length sizing dies work by bumping the shoulder and sizing the body of the case so it chambers easily in your rifle, while simultaneously decapping the spent primer. The expander ball inside the die sizes the neck to the correct tension for your bullets. The seater die handles bullet placement and features a built-in crimp ring, so you can choose to crimp or leave uncrimped simply by adjusting the die height in your press. This flexibility is valuable when working with different bullet types or load recipes.

Setting up a 260 Remington die set correctly is straightforward but worth doing right. A cartridge headspace gage helps you dial in proper shoulder bump—a small investment that pays dividends in case longevity and chamber fit. Always lubricate cases before full-length sizing to protect both your brass and your dies. RCBS recommends that new reloaders start with a full-length die set, master the setup process, and build from there as your skills and demands grow.

Key Features

• Complete two-die set for 260 Remington—sizing and seating in one package
• Full-length sizing die with adjustable shoulder bump and primer decapping
• Seater die with integrated crimp ring for flexible crimping control
• Expander ball sizes case neck to proper tension
• Built to last through multiple barrel rotations and hundreds of reload cycles

Specifications

Product	RCBS 12801 Full-Length 2-Die Set Group A
Caliber	260 Remington
Type	Full-Length Rifle Die Set
Die Count	2 (sizing die and seater die)
Die Group	Group A

Frequently Asked Questions

Do I need to lubricate brass before using a full-length sizing die?

Yes. Cases must be lubricated before full-length sizing to protect both the die and your brass from damage and binding.

Can this die set crimp bullets, or is it seating only?

The seater die includes a built-in crimp ring. You control whether to crimp by adjusting the die position in the press—raise it to leave uncrimped, lower it to engage the crimp ring.

What's the best way to set up the shoulder bump on the sizing die?

RCBS recommends using a cartridge headspace gage tool to dial in correct shoulder bump. Adjust the full-length sizing die up or down in the press to achieve the bump that works best for your rifle's chamber.

Is a full-length die set suitable for someone new to reloading?

Yes. RCBS recommends that new reloaders start with a full-length die set, master the correct setup process, and build additional skills from there before exploring other die types.