$77.44
9 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
New brass almost never shows up ready to load. Necks get dented and knocked out of round during bulk shipping, and that uneven starting point shows up later as inconsistent seating force and scattered groups. The L.E. Wilson Expanding Mandrel Die fixes that at the source by running a precision mandrel down the inside of each .30 caliber neck, ironing out dents and setting a uniform inside diameter so every case grips the bullet the same way.
The idea behind a mandrel is simple but effective. Instead of working the neck from the outside like an expander ball that sizes down then pushes back up, the mandrel sets the inside diameter from within and leaves the neck slightly under bullet diameter. That gives you consistent neck tension, which is one of the biggest factors behind lower extreme spread and standard deviation on the chronograph. More uniform tension means your bullets seat with the same feel every time, and that consistency is what tightens groups downrange.
This die shines on fresh brass prep and anytime you want clean, round necks before seating. A lot of precision reloaders run their cases through a sizing die with the expander ball removed, then finish with a mandrel to set final neck tension. It also knocks out the out-of-round necks that stainless pin tumbling can leave behind, which .308 and other .30 cal brass is especially prone to. The die sizes against the mandrel at 0.3075 inches, landing just under .30 cal bullet diameter for workable tension right off the bat.
The die uses stainless parts for a long-lasting, corrosion-resistant finish and a cut-out body that lets you see the case as it enters, so aligning and setting your depth is straightforward and repeatable. It threads into any standard 7/8-14 reloading press and includes an L.E. Wilson lock nut to hold your setting once dialed in. One mandrel comes in the box, and since the mandrels are interchangeable, you can pick up additional diameters down the road to fine-tune neck tension to your load. A light touch of lube on the mandrel keeps the operation smooth. Made in the U.S.A. and backed by the L.E. Wilson name reloaders have trusted for generations.
It runs a precision mandrel down the inside of the case neck to set a uniform inside diameter and iron out dents. The neck ends up slightly under bullet diameter, which gives you consistent neck tension and more repeatable bullet seating. It is a go-to step for prepping new brass before its first firing.
Yes, the die includes one .30 caliber mandrel at 0.3075 inches. The mandrels are interchangeable, so you can add other diameters or caliber mandrels separately to dial in different neck tensions or work other cartridges with the same die body.
It threads into any standard 7/8-14 reloading press, so it works with common single-stage and turret presses. A light coat of lube on the mandrel keeps the operation smooth and easy.
A common approach is to size the case first with the expander ball removed, then finish with the mandrel to set final neck tension. It also works great on fresh brass straight from the box and for cleaning up necks that went slightly out of round during stainless pin tumbling.
| UPC | 815145028433 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | EXP-30MD |
| Shipping Weight | 0.5 |
You must be logged in to post a review.
Reviews
There are no reviews yet.