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RCBS 17801 F L DIE SET 7MM REMINGTON ULTRA MAGNUM
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
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SKU: 17801-076683178015
Overview
Built for bottleneck case reloading, this two-die set gives handloaders the core tools needed to size and seat cartridges with control. The full-length sizer die returns cases to SAAMI minimum cartridge dimensions, de-primes them, and expands the neck, while vents help reduce the risk of 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
Full-length Sizer
Die brings cases to SAAMI
Sizer Die
Includes vents to help prevent
Headspace Is
Held to minimum tolerances during
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
- Sizer die brings cases to SAAMI minimum cartridge dimensions
- Vented die design helps prevent case damage from trapped air or 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 7mm Remington Ultra Magnum bottleneck cases and standard 7/8-inch-14 presses
- Shooters needing full-length sizing, decapping, neck expansion, and bullet seating in one die set
- Handloaders who want a built-in roll crimp during seating for secured bullet placement
- Users setting up a reloading bench for SAAMI minimum cartridge dimensions and controlled headspace
- Experienced reloaders who already have a compatible shell holder and need a two-die solution
Specifications
| Built In Roll Crimper | Yes |
|---|---|
| Bullet Seater Plug Included | Yes |
| Case Body Length Change During Full Length Sizing | Minimized |
| Die Set Type | Two-die set |
| Expander Decapping Unit Included | Yes |
| Full Length Sizer Die Included | Yes |
| Headspace Tolerance | Minimum tolerances |
| Intended Use | Reloading bottleneck cases |
| Saami Minimum Cartridge Dimensions | Yes |
| Seater Die Included | Yes |
| Shell Holder Included | No |
| Thread Size | Standard 7/8-inch-14 thread |
| Vents | Yes |
Pros
- Two-die set covers full-length sizing and bullet seating in one package.
- Full-Length Sizer Die brings cases to SAAMI minimum cartridge dimensions.
- Sizer die includes vents to help prevent 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 securing bullets.
- Standard 7/8-inch-14 thread fits common reloading setups.
Considerations & Trade-offs
- This is a two-die set for bottleneck cases, so it is not a universal solution for all reloading tasks or cartridge types.
- A shell holder is not included, so that component must be sourced separately before use.
- The full-length sizing die brings cases to SAAMI minimum cartridge dimensions, which may be more sizing than some reloaders want for cases already matched to a specific chamber.
- The seater die includes a built-in roll crimper, which is useful for some loads but may not suit every bullet or seating preference.
Suggested Comparisons
- Bottleneck rifle die sets
- Full-length sizing dies
- Bullet seating dies
- Reloading die sets for magnum rifle cartridges
Suggested Accessories
- Shell holder
- Reloading press
- Case lubricant
- Case cleaning equipment
Frequently Asked Questions
What comes in the RCBS 17801 F L Die Set for 7mm Remington Ultra Magnum?
It includes two dies: 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 with this die set.
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 at the same time as it is seated.