Description
If you shoot 6 BR Ackley Improved and you're chasing tight groups, the way your neck gets sized matters a lot. This L.E. Wilson Bushing Neck Sizing Die lets you size only the outside of the case neck using an interchangeable bushing, so you set the exact amount of neck tension your load wants instead of being stuck with whatever a fixed die hands you.
The big advantage here is what it leaves out. There's no expander ball dragging back through the neck, which is where a lot of runout and brass stretch comes from on conventional dies. Pulling that step out of the equation keeps your necks concentric and your brass in service longer, and that's exactly the kind of consistency that shows up on target.
How the 6 BR-A Neck Die Works
This is an arbor press die, so it's a little different from a threaded press die if you're new to the Wilson system. You press the case into the die to size the neck, then flip it over on a neck die base to push the case back out and knock out the spent primer. It sizes the neck roughly 3/16 inch down from the mouth, which is the partial-neck sizing approach a lot of precision handloaders prefer. The die includes a decapping rod. The sizing bushing and the neck die base are sold separately, which is intentional, since it lets you pick the precise bushing that matches your brass and neck wall thickness.
Fit, Finish, and Bushing Compatibility
Wilson has a well-earned reputation for the machine work on these dies, and the 6 BR-A is no exception. The fit and finish is smooth enough that sizing takes very little effort and very little lube. It accepts both Wilson and Redding neck bushings, so you've got a wide range of sizes available in .001 inch increments to fine-tune tension as your brass works and your load develops. For bench rest and precision reloaders running the 6 BR-A, it's a tool that earns its place on the bench.
Key Specifications
- Manufacturer: L.E. Wilson
- Manufacturer Part Number: SND-BRA
- UPC: 815145026798
- Caliber/Cartridge: 6 BR-A (6mm BR Ackley Improved)
- Die Type: Bushing Neck Sizing Die
- Operation: Arbor press
- Material: Stainless steel
- Sizing Method: Interchangeable bushing, no expander ball
- Neck Sizing Depth: Approximately 3/16 inch from case mouth
- Bushing Compatibility: Accepts Wilson and Redding neck bushings
- Country of Origin: USA
What’s Included
- L.E. Wilson 6 BR-A bushing neck sizing die
- Decapping rod
Frequently Asked Questions
Does the 6 BR-A neck sizing die come with a bushing?
No, bushings are sold separately. That's by design so you can match the exact bushing size to your brass and the neck tension you're after. The die accepts both Wilson and Redding neck bushings, which come in .001 inch increments.
Do I need anything else to use this die?
Yes, this is an arbor press die, so you'll want an arbor press to run it, along with a neck die base to help remove the case and decap the spent primer. The bushing is also a separate purchase. The decapping rod itself is included with the die.
Why run a bushing neck die instead of a standard sizing die?
A bushing die sizes only the outside of the neck and skips the expander ball entirely. That reduces neck runout and keeps your brass from being stretched and pulled back on every cycle, which improves concentricity and extends case life. It also lets you tune neck tension precisely by swapping bushings.
Will this die work for standard 6mm BR brass?
This die is cut specifically for the 6 BR-A, which is the 6mm BR Ackley Improved chambering with its sharper shoulder. It's intended for fire-formed brass in that chamber. If you're loading standard 6mm BR, you'll want the dedicated 6mm BR die instead.



Reviews
There are no reviews yet.