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RCBS 31401 F L DIE SET 7MM WINCHESTER SHORT MAGNUM
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
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SKU: 31401-076683314017
Overview
This two-die set is built for reloading bottleneck cases in 7mm Winchester Short Magnum, giving handloaders the tools needed to size, de-prime, expand the neck, and seat bullets in one matched setup. The full-length sizer brings cases to SAAMI minimum cartridge dimensions while holding headspace to minimum tolerances, helping maintain consistent case dimensions through the sizing step. A built-in roll crimper in the seater die adds bullet security during seating, and the vented sizing die is designed to help prevent case damage from trapped air or excess lubricant. 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
Full-length Sizer
Die brings bottleneck cases to
Sizer Die
De-primes and expands the neck
Die Vents
Help reduce case damage from
Seater Die
Includes a built-in roll crimper
Key Features
- Two-die set for reloading bottleneck cases
- Includes a full-length sizer die with expander-decapping unit
- Includes a seater die with bullet seater plug
- Sizer die brings cases to SAAMI minimum cartridge dimensions
- Die vents help prevent 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 7mm Winchester Short Magnum bottleneck cases
- Shooters needing full-length sizing for SAAMI minimum cartridge dimensions
- Users who want seating and roll crimping in one die set
- Handloaders seeking a standard 7/8-inch-14 threaded die set
- Reloaders who already have a compatible shell holder
Specifications
| Die Set Type | Two-die set |
|---|---|
| Headspace Control | Held to 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 |
| Shell Holder Included | No |
| Sizer Die Actions | Sizes the outside of the case; de-primes; expands the neck to accept the bullet |
| Sizer Die Function | Brings the case to SAAMI minimum cartridge dimensions |
| Thread Size | Standard 7/8-inch-14 thread |
| Vent Holes | Yes |
Pros
- Two-die set covers full-length sizing and bullet seating in one package.
- Full-Length Sizer Die brings bottleneck 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 and excess lubricant.
- Seater die includes a built-in roll crimper for seating and securing bullets.
- Standard 7/8-inch-14 thread fits common reloading setups.
Considerations & Trade-offs
- Designed for bottleneck cases only, so it is not a universal die set for other cartridge types.
- A shell holder is not included, so that part must be sourced separately if you do not already have one.
- The full-length sizing approach brings cases to SAAMI minimum cartridge dimensions, which may be more sizing than some handloaders want for every application.
- The seater die includes a built-in roll crimper, which is useful for securing bullets but may not suit loads where a separate crimping step is preferred.
Suggested Comparisons
- Reloading die sets
- Full-length sizing dies
- Bullet seating dies
- Bottleneck rifle cartridge reloading tools
Suggested Accessories
- Reloading press
- Shell holder
- Case lubricant
- Honing stone
Frequently Asked Questions
What comes in the RCBS 31401 F L Die Set for 7mm Winchester Short Magnum?
It includes a Full-Length Sizer Die with an Expander-Decapping Unit and a Seater Die with a Bullet Seater Plug.
Is a shell holder included with this die set?
No. The product data states that a shell holder is not included.
What type of cases is this die set intended for?
It is intended for reloading bottleneck cases.
What does the Full-Length Sizer Die do?
According to the product data, it brings the case to SAAMI minimum cartridge dimensions, sizes the outside of the case, de-primes it, and expands the neck to accept the bullet.
Does the Seater 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.