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RCBS 15201 F L DIE SET .300 WEATHERBY MAGNUM
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
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SKU: 15201-076683152015
Overview
This two-die set is built for reloading bottleneck cases in .300 Weatherby 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 during sizing. A built-in roll crimper in the seater die helps secure the bullet as it is seated, and the vented sizing die is designed to reduce the risk of 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
Brings cases to SAAMI minimum
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
- Includes a Seater Die with Bullet Seater Plug
- Sizer Die brings cases to SAAMI minimum cartridge dimensions
- Sizer Die has vents to 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 .300 Weatherby Magnum bottleneck cases and standard 7/8-inch-14 presses
- Hunters who need full-length sizing to keep resized brass within SAAMI minimum cartridge dimensions
- Users wanting one die set for sizing, decapping, neck expansion, seating, and roll crimping
- Reloaders who prefer controlled headspace during full-length sizing to help maintain case body length
- Experienced handloaders who already have a compatible shell holder and want a complete two-die setup
Specifications
| Die Set Type | Two-die set |
|---|---|
| Die Venting | Vents to prevent case damage caused by trapped air and excessive lubricant |
| Headspace Control | Held to minimum tolerances to avoid changing the case body length during full length sizing |
| Intended Use | Reloading bottleneck cases |
| Seater Die Feature | Built-in roll crimper |
| Seater Die Includes | Bullet Seater Plug |
| Seater Die Type | Seater Die |
| Shell Holder Included | No |
| Sizer Die Function | Brings the case to SAAMI minimum cartridge dimensions |
| Sizer Die Includes | Expander-Decapping Unit |
| Sizer Die Operations | Sizes the outside of the case, de-primes, and expands the neck to accept the bullet |
| Sizer Die Type | Full-Length Sizer Die |
| 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 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 bullet retention.
- 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 cartridge types or loading tasks.
- 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 can be more restrictive than a setup aimed at preserving maximum case fit to a specific chamber.
- The seater die includes a built-in roll crimper, which is useful when desired but adds a crimping step even if your loading process does not require one.
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
- Case cleaning equipment
Frequently Asked Questions
What is included in this RCBS .300 Weatherby Magnum die set?
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 intended for bottleneck cases?
Yes. The product description states that this two-die set is intended for reloading bottleneck cases.
Does the 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 seating 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.