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RCBS 12101 F L DIE SET .25-35 WINCHESTER
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
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SKU: 12101-076683121011
Overview
Built for bottleneck case reloading, this two-die set gives handloaders the tools needed to size, de-prime, expand the neck, and seat bullets in one setup. The full-length sizer die returns cases to SAAMI minimum cartridge dimensions while holding headspace to minimum tolerances, and its vents are designed to help reduce case damage from trapped air or excess lubricant. The seater die includes a bullet seater plug and a built-in roll crimper, allowing the bullet to be seated and secured in the same step. It uses standard 7/8-inch-14 threads, and a shell holder is not included.
Why Hunters Choose the Rcbs
Two-die Set
Covers full-length sizing and bullet
Sizer Die
Brings cases to SAAMI minimum
Sizer Die
De-primes and expands the neck
Die Vents
Help reduce case damage from
Headspace Is
Held to minimum tolerances during
Key Features
- Two-die set for reloading bottleneck cases
- Includes Full-Length Sizer Die with Expander-Decapping Unit
- Includes Seater Die with Bullet Seater Plug
- Sizer die brings cases to SAAMI minimum cartridge dimensions
- Built-in vents help prevent case damage from trapped air or excess lubricant
- Seater die includes a built-in roll crimper
- Standard 7/8-inch-14 thread; shell holder not included
Best Used For
- Reloaders working with .25-35 Winchester bottleneck cases and standard 7/8-inch-14 dies
- Users needing full-length sizing, depriming, neck expansion, and bullet seating in one set
- Handloaders who want a built-in roll crimp during bullet seating for secured cartridges
- Reloading bench setups where a shell holder is already on hand and not included with the set
Specifications
| Cartridge | .25-35 Winchester |
|---|---|
| Die Type | Full-Length Die Set |
| Headspace | Held to minimum tolerances |
| Includes | Full-Length Sizer Die with Expander-Decapping Unit; Seater Die with Bullet Seater Plug |
| Number Of Dies | 2 |
| Seater Die Feature | Built-in roll crimper |
| Shell Holder Included | No |
| Sizer Die Features | Vents to prevent case damage caused by trapped air and excessive lubricant |
| Sizer Die Function | Sizes outside of case; de-primes; expands neck |
| Sizer Die Standard | SAAMI minimum cartridge dimensions |
| Thread Size | Standard 7/8-inch-14 |
Pros
- Two-die set covers full-length sizing and bullet seating for bottleneck cases.
- Sizer die brings cases to SAAMI minimum cartridge dimensions.
- Sizer die de-primes and expands the neck for bullet acceptance.
- Die vents help reduce case damage from trapped air or excess lubricant.
- Headspace is held to minimum tolerances during full-length sizing.
- Seater die includes a built-in roll crimper for seating and crimping in one step.
Considerations & Trade-offs
- Designed for bottleneck case reloading, so it is not a universal die set for all cartridge types.
- The full-length sizing step brings cases to SAAMI minimum dimensions, which can be more restrictive than partial sizing for some loading preferences.
- A shell holder is not included, so that component must be sourced separately.
- The seater die includes a built-in roll crimper, which is useful for securing bullets but adds crimping into the seating step rather than keeping it separate.
Suggested Comparisons
- Bottleneck rifle die sets
- Full-length sizing dies
- Bullet seating dies
- Reloading shell holders
Suggested Accessories
- Reloading press
- Shell holder
- Case lubricant
- Case trimmer
Frequently Asked Questions
What comes in the RCBS 12101 F Die Set for .25-35 Winchester?
It includes a Full-Length Sizer Die with an Expander-Decapping Unit and a Seater Die with Bullet Seater Plug. A shell holder is not included.
Is this die set meant for bottleneck cases?
Yes. The product description says this two-die set is intended for reloading bottleneck cases.
What does the Full-Length Sizer Die do?
It sizes the outside of the case, de-primes it, and expands the neck to accept the bullet. It also brings the case to SAAMI minimum cartridge dimensions.
Does the seating die crimp the bullet?
Yes. The included Seater Die has a built-in roll crimper to secure the bullet at the same time it is seated.
What thread size does this die set use?
The specifications list a standard 7/8-inch-14 thread.