RCBS 10301 Full-Length 2-Die Set for 204 Ruger (Group A)

The RCBS 10301 is a full-length 2-die set designed specifically for reloading .204 Ruger bottleneck cases. If you're working up loads for this compact but capable cartridge—whether you're a precision rifle competitor, varmint hunter, or handloader who wants to maximize case life and consistency—this set gives you the core dies needed to resize, deprime, and seat bullets with repeatable accuracy.

Full-length sizing brings your fired cases back to SAAMI minimum dimensions, which is the safest and most versatile approach for ammunition you might shoot in different firearms. The included full-length sizer die handles the heavy lifting: it resizes the case body, removes the spent primer, and expands the neck to proper diameter for bullet seating. Vents in the die design prevent air trapping and excessive lubricant buildup that can compromise case integrity. Headspace is held to minimum tolerances, so the case body length stays consistent and you're not inadvertently changing cartridge dimensions during the sizing stroke.

The seater die incorporates a roll crimper, which means your bullet gets seated and secured in a single stroke. That's fewer operations per round and less chance of variation between rounds. Both dies are standard 7/8-inch-14 thread, so they'll drop into any compatible RCBS or universal reloading press that accepts that thread pattern.

This is straightforward, no-frills tooling from RCBS—built to work, built to last, and built for handloaders who understand that consistency in reloading dies translates to consistency at the range and in the field.

Key Features

• Full-length sizer die with integrated expander-decapping unit for complete case prep in one station
• Seater die with built-in roll crimper for simultaneous bullet seating and securing
• Vented sizer die design prevents case damage from trapped air and lubricant excess
• Headspace set to SAAMI minimum tolerances for consistent case dimensions
• Standard 7/8-inch-14 thread for compatibility with RCBS and universal reloading presses
• Caliber-specific for .204 Ruger bottleneck cases

Specifications

Frequently Asked Questions

Will this die set work with my reloading press?

As long as your press accepts standard 7/8-inch-14 thread dies, yes. That includes RCBS presses and most universal single-stage and progressive loaders on the market. Check your press manual if you're unsure of its die thread specification.

What's included in this 2-die set?

You get a full-length sizer die (with expander-decapping unit to remove primers) and a seater die with an integrated roll crimper and bullet seater plug. These two dies handle all the essential steps for reloading .204 Ruger: sizing, decapping, neck expansion, and bullet seating with crimp.

Why full-length sizing for .204 Ruger?

Full-length sizing resizes the entire case to SAAMI minimum specifications, which makes your ammo safe and reliable across different firearms. It's the most conservative and forgiving approach, especially if you're developing loads or shooting in multiple rifles. It also maximizes case life by maintaining proper dimensions through each reload cycle.

Does this set include everything I need to start reloading .204 Ruger?

This set includes the two essential dies. You'll also need a reloading press, a scale, calipers, a priming tool, brass cases, primers, powder, and bullets. The dies themselves are the cartridge-specific part of your reloading setup.