Image unavailable
RCBS 12601 F L DIE SET .257 WEATHERBY MAGNUM
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$51.29
List Price: $53.99
You Save: $2.70 (5%)
View on Fin Feather Fur Outfitters
You'll be taken to Fin Feather Fur Outfitters to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: 12601-076683126016
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 streamlined setup. The full-length sizer die returns cases to SAAMI minimum cartridge dimensions while helping maintain headspace within minimum tolerances during sizing. A built-in roll crimper in the seater die adds a secure finish as the bullet is seated, making this set well suited for careful rifle ammunition preparation. Note that a shell holder is not included, and the dies use standard 7/8-inch-14 threads.
Why Hunters Choose the Rcbs
Two-die Set
Covers full-length sizing and bullet
Full-length Sizer
Die brings cases to SAAMI
Sizer Die
Includes an expander-decapping unit for
Die Vents
Help reduce case damage from
Headspace Is
Held to minimum tolerances during
Key Features
- Two-die set for reloading bottleneck cases
- Includes a full-length sizer die with expander-decapping unit
- Sizer die brings cases to SAAMI minimum cartridge dimensions
- Sizer die sizes the case, de-primes, and expands the neck
- Vents help reduce case damage from trapped air and excess lubricant
- Seater die includes a bullet seater plug and built-in roll crimper
- Standard 7/8-inch-14 thread; shell holder not included
Best Used For
- Reloaders working with .257 Weatherby Magnum bottleneck cases who need full-length sizing and seating in one set.
- Hunters loading ammunition for consistent chambering after repeated firing and resizing cycles.
- Handloaders who want a die set with a built-in roll crimp during bullet seating.
- Users setting up a standard 7/8-inch-14 press and already have a compatible shell holder.
- Reloading bench users focused on SAAMI minimum cartridge dimensions and controlled headspace during sizing.
Specifications
| Die Vents | Yes |
|---|---|
| Full Length Sizer Die Function | Brings the case to SAAMI minimum cartridge dimensions |
| Headspace Tolerance | Minimum tolerances |
| Included Dies | Full-Length Sizer Die with Expander-Decapping Unit; Seater Die with Bullet Seater Plug |
| Intended Use | Reloading bottleneck cases |
| Seater Die Feature | Built-in roll crimper |
| Set Type | Two-die set |
| Shell Holder Included | No |
| Sizer Die Actions | Sizes the outside of the case; de-primes; expands the neck to accept the bullet |
| Thread Size | Standard 7/8-inch-14 thread |
Pros
- Two-die set covers full-length sizing and bullet seating for bottleneck cases.
- Full-Length Sizer Die brings cases to SAAMI minimum cartridge dimensions.
- Sizer die includes an expander-decapping unit for resizing and de-priming.
- Die vents help reduce case damage from trapped air and excess lubricant.
- Headspace is held to minimum tolerances during full-length sizing.
- Seater Die includes a built-in roll crimper for bullet retention while seating.
Considerations & Trade-offs
- A shell holder is not included, so this set is not fully ready to use on its own.
- The full-length sizing die brings cases to SAAMI minimum cartridge dimensions, which can be more than needed if you only want minimal case sizing for a specific rifle.
- The seater die includes a built-in roll crimper, so it is geared toward seating and crimping in one step rather than offering a separate crimping setup.
- This is a two-die set for bottleneck cases, so it is not intended for other case types or for users looking for a more specialized die configuration.
Suggested Comparisons
- Bottleneck rifle die sets
- Full-length sizing dies
- Bullet seating dies
- Reloading die sets for magnum rifle cartridges
Suggested Accessories
- Reloading die storage box
- Shell holder
- Case lubricant
- Reloading press
Frequently Asked Questions
What comes in the RCBS 12601 F L Die Set for .257 Weatherby Magnum?
It includes a Full-Length Sizer Die with an Expander-Decapping Unit and a Seater Die with a Bullet Seater Plug.
Is this die set meant for bottleneck cases?
Yes. The product description says it is intended for reloading bottleneck cases.
Does this set include a shell holder?
No. The specifications state that a shell holder is not included.
What thread size does this die set use?
It uses standard 7/8-inch-14 thread.
Does the seater die crimp the bullet?
Yes. The included Seater Die has a built-in roll crimper to secure the bullet as it is seated.