REDDING Extended Case Holder No. 1

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REDDING 11501 · Extended Shellholder #1
More reach for short cases—but only with confirmed #1 compatibility The extended shellholder No. 1 is designed for trimming short cases under 1.5″ in overall length. Its extra length provides the reach needed in the right press/trimmer setup.
Key buying point: “No. 1” is a Redding-specific designation, not a universal industry standard.

Our honest take
The 11501 is a specialized tool for a specific situation: short cases, confirmed Redding #1 compatibility, and a setup that uses a press-type shellholder. For standard reloading operations, the standard shellholder is usually the better choice.


A good fit if … you trim short cases under 1.5″ and Redding explicitly specifies Shellholder #1 for the case.


Probably not a fit if … you’re looking for a universal standard shellholder, the numbering hasn’t been confirmed, or your trimmer uses a different holding system.


Features and practical benefits


Extended design Provides extra reach for short cases in the intended trimming setup.


Redding #1 geometry The case-head fit remains the Redding-defined No. 1; the extended design doesn’t change this compatibility system.


Knurled exterior Makes it easier to insert and remove by hand.


Heat-treated Designed for long-term use as a workshop component.


Limitations, drawbacks, and how to avoid a bad purchase

Don’t assume the number is universal across manufacturers: another manufacturer’s “1” doesn’t guarantee a fit.
Trimmer mount pr
Check: Some systems use collets, pilots, or proprietary holders.
No measuring function: The shellholder does not set the final trim length; adjustment and measurement checks remain the trimmer’s and measuring tool’s job.

Technical specifications in practice

Model REDDING Extended Shellholder #1, manufacturer no. 11501.

Use Trimming short cases under 1.5″ OAL when Redding #1 compatibility is confirmed.

Design Extended press-type shellholder.

Identifier Brownells 749002011 · UPC 611760115011.

Included
1 × REDDING Extended Shellholder #1, MPN 11501. Press, trimmer, pilot, cutting tool, and cases are not included.
Safe use
Only work on completely empty cases. Before use, check the exact shellholder compatibility in the current manufacturer documentation and stop if you encounter unusual resistance. The extended shellholder is a fitment component, not a license to use cases with different geometry.
FAQ
What is the extended version used for? For trimming short cases under 1.5″ overall length when the specific setup needs the extra reach. Is number 1 the same across all manufacturers? No. Numbering is manufacturer-specific. Does the 11501 fit every trimmer? No. The specific trimmer’s holding system must use a compatible press-type shellholder. Does the shellholder determine the trim length? No. The length is set on the trimmer and then checked.
Black Raptor buying guide
Confirm #1 compatibility first, then choose the extended version. The 11501 is not a universal shellholder, but a targeted reach solution for short cases in a compatible Redding #1 setup.