RCBS .358 NECK EXPANDER DIE
Product Information
RCBS Neck Expander Dies are specifically designed to flare the inside dimension of only the case neck to ensure perfect alignment of the bullet during seating.
- Expands the inside of the case neck of your brass casings
- Ensures perfect alignment of the bullet during seating
- Flares the inside dimension of the case neck while leaving the rest of the case body untouched
- Made with high-quality materials and precision manufacturing techniques
- Provides consistent results over time
- Neck Expander Plug Rod is designed to use with die
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Read 2 Reviews - Average Rating: 5 stars
Very nice piece
By Palmer P. on Nov 12, 2025
I was skeptical of the quality of the finish on the expander bell when looking at the pics. However I needed something for my 35 Remington cases so I took a chance on the RCBS reputation and I was pleasantly impressed. Classic RCBS quality, fit, and finish all around. The expander is nice and long to go deep in the case past the neck and the bell makes a perfect flare for flat bottom bullets.
I’ll be ordering another die in 308 for my 30-30 rounds!
I’ll be ordering another die in 308 for my 30-30 rounds!
Works Great!
By Patrick R. on Apr 27, 2023
I use the 35 caliber expander die to slightly flare the mouths of my 9.3 X 74R cases before seating jacketed bullets. It helps the bullets to seat smoother & straighter without any chance of deforming the case neck. The flare is removed when crimping the case mouth in a separate step.
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