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RCBS 17701 F L DIE SET .338 REMINGTON ULTRA MAGNUM
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
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SKU: 17701-076683177018
Overview
Built for bottleneck case reloading, this two-die set gives handloaders the core tools needed to size and seat cartridges with consistent control. The full-length sizer die returns cases to SAAMI minimum cartridge dimensions, de-primes, 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 one 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 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
- 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 .338 Remington Ultra Magnum bottleneck cases and standard 7/8-inch-14 dies
- Hunters needing full-length sizing for ammunition that must chamber consistently after repeated use
- Handloaders who want one set for sizing, depriming, neck expansion, seating, and roll crimping
- Users building hunting loads that benefit from controlled headspace and case dimension adjustment
- Reloading bench setups where a shell holder is already on hand and not needed in the kit
Specifications
| Cartridge | .338 Remington Ultra Magnum |
|---|---|
| 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 |
| Product Type | Two-die set |
| Seater Die Feature | Built-in roll crimper |
| Shell Holder Included | No |
| Sizer Die Function | Brings the case to SAAMI minimum cartridge dimensions |
| Sizer Die Operations | Sizes the outside of the case; de-primes; expands the neck to accept the bullet |
| Sizer Die Vents | Yes |
| 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 sizing 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 seating and crimping together.
Considerations & Trade-offs
- Designed for bottleneck cases only, so it is not a universal die set for all rifle cartridges.
- A shell holder is not included, so that component must be sourced separately if needed.
- The full-length sizing die brings brass to SAAMI minimum cartridge dimensions, which can require more case working than a neck-sizing-only approach.
- The seater die includes a built-in roll crimp, which is useful for some loads but may not suit every bullet or loading preference.
Suggested Comparisons
- Bottleneck rifle case die sets
- Full-length sizing dies
- Bullet seating dies
- Reloading die sets with roll crimping
Suggested Accessories
- Shell holder
- Reloading press
- Case lubricant
- Case gauge
Frequently Asked Questions
What comes in the RCBS 17701 F L Die Set .338 Remington Ultra Magnum?
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.
What type of cases is this die set intended for?
This two-die set is intended for reloading bottleneck cases.
Does the full-length sizing die do more than resize the case?
Yes. According to the product description, it 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 as it is seated.
What thread size does this die set use, and is a shell holder included?
It uses standard 7/8-inch-14 thread. A shell holder is not included with this die set.