Description
Precision handloaders know that neck tension is one of the biggest levers you can pull for consistent groups, and that is exactly what a bushing like this .251" Redding Titanium Nitride piece lets you control. Rather than oversizing the neck and springing it back open, you pick the bushing that works your brass just enough to hold the bullet right. This one measures .251" and carries Redding's part number 76251.
What the TiN Coating Brings to the .251 Bushing
Redding starts with heat treated steel and hand polishes the sizing diameter to a hardness around Rc 60 to 62, then adds a titanium nitride surface treatment that pushes the effective hardness even higher and cuts down sizing friction. In plain terms, the stroke feels smoother and the bushing holds its dimension through a lot of cases. With the neck properly lubed, it slides over the brass without leaving marks on the necks, which is what you want when you are chasing accuracy.
Fit and Compatibility of the Redding 76251
These neck sizing bushings freely interchange across Redding's bushing style dies, including the Type S Full and Neck Sizing dies, and they also drop into Wilson style bushing setups. The bushing itself follows Redding's standard dimensions of 1/2" outside diameter by 3/8" long, and the size is marked right on it so you always know which one you have grabbed from the drawer. Redding offers the full range in .001" steps, so once you know your target you can land right on it.
Picking the Right Size
To figure out which bushing you need, measure the outside neck diameter of a loaded round with a good micrometer, then subtract about .001" to .002" to account for brass spring back and give you proper bullet grip. That math points you straight to the number. This .251" option lands in the range that works well for a number of 25 caliber and similar neck setups. Made in the USA, it is a small part that makes a real difference on the bench.
Key Specifications
- Manufacturer: Redding
- Manufacturer Part Number: 76251
- UPC: 611760762512
- Bushing Diameter: .251"
- Surface Treatment: Titanium Nitride (TiN)
- Base Material: Heat treated steel
- Surface Hardness: Approx. Rc 60-62 (hand polished)
- Dimensions: 1/2" O.D. x 3/8" long
- Compatibility: Redding bushing style dies, Type S dies, Wilson style bushings
- Size Range Available: .001" increments across the caliber lineup
- Country of Origin: USA
- Shipping Weight: 0.0188 lbs
What’s Included
- One Redding .251" Titanium Nitride neck sizing bushing (76251)
Frequently Asked Questions
What dies does the Redding .251" titanium nitride bushing fit?
It fits all Redding bushing style neck sizing dies, including the Type S Full and Neck Sizing dies. It also interchanges with Wilson style bushings, so it works across most popular bushing setups. The bushing uses Redding's standard 1/2" O.D. by 3/8" long dimensions.
How do I know if .251" is the right bushing size for me?
Measure the outside neck diameter of a loaded cartridge with a precision micrometer, then subtract about .001" to .002" to account for brass spring back and bullet tension. That number tells you the bushing to grab. Redding offers these in .001" increments, so you can fine tune neck tension to your exact load.
What is the advantage of the titanium nitride coating over a plain steel bushing?
The titanium nitride treatment increases the effective surface hardness beyond the heat treated steel base and reduces sizing friction. That means a smoother sizing stroke and longer service life out of the bushing. With the neck lubed, it slides over the brass without leaving marks.
Is the size marked on the Redding bushing?
Yes, every Redding neck sizing bushing is marked with its size identification right on the body. That makes it easy to pull the correct one from your bushing drawer without guessing. This one is marked .251" and carries part number 76251.



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