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Base Guard(tm) disks are attached to the base of a lead
bullet when the bullet is swaged. To do so, the normal
flat base core seat or lead swc punch is replaced with
one having a small round depression in the center. The
lead then extrudes through a hole in the center of the BG
disk, and forms a rivet head securing the disk to the bullet base.
The disk is free to rotate under pressure, so that if the
bullet slips in the rifling, the disk remains locked to the rifling, and prevents gas leakage. The edge of the
disk faces the bore, and scrapes fouling from the bore as
the bullet is fired. The BG disk is slightly conical prior
to swaging. When swaged, it flattens and grows to the size
of the die, making it precisely the same diameter as the
bullet. Thus, one BG disk can fit a narrow range of different
bullet diameters.
BG disks are sold in packages of 1000. They are generally
more economical than Gas Checks, and actually work better
to prevent and remove fouling. Select the desired size from the list.
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Base Guard(tm), 41
Code: JBG-41
Price:
$53.00
Check at Corbins.com
Quantity in Basket:
none
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