Wilson Expanding Mandrel Only .30 Cal .307″
$15.18
Prepare new .30 Cal .307″ brass cases for seating and first firing with the Wilson Expanding Mandrel Sizing Die. Ensures consistent case preparation and prevents damage from bulk shipping.
Out of stock
The Wilson Expanding Mandrel Sizing Die. This die is designed to be used on NEW brass cases to prepare the case for the seating operation. Over the past few years we have seen a greater need to run new brass cases over and expanding mandrel to properly prepare them for their first firing. New brass cases are often damaged when shipped in bulk this die will give you a consistent neck diameter on your cases. With correct neck tension you can expect a more consistent seating depth and shot.
Includes one mandrel. Additional mandrels sold separately.
Features:
- Cut out in die provides an easy view for making sure case aligns and setting up depth
- Interchangeable Mandrels depending on caliber
- Standard 7/8ths Reloading Press
- Die ONLY expands neck to slightly under bullet diameter
- Stainless Parts for a Long Lasting Finish
- Durable and Accurate
- L.E. Wilson manufactured lock nut – thickness is .225" from inside to outermost edge .270" for height and 1.250" total width OD
| Weight | 0.100 lbs |
|---|---|
| Dimensions | 6.250 × 3.000 × 0.500 in |
| Manufacturer | L.E. Wilson |
| Finish | Long Lasting |
| Weight | .225″ thickness |
| Material | Stainless |
| Dimensions | 1.250″ total width OD |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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