For use with 380 ACP, 10mm, 40 S&W, 41 AE (Use 40 S&W Factory Crimp Die), 45 ACP, 45 GAP, and 45 Win Mag calibers ONLY!
The 90487 Bulge Buster is a push through die adapter kit made to enable you to reduce a case diameter back to specification for the entire case length, where most other dies that use a shell holder, can not. You will also require a caliber specific pistol Carbide Factory Crimp Die in the caliber you are removing the bulge from (see compatible calibers above). The inside diameter of the carbide sizing ring in the Carbide Factory Crimp Die is larger than that in the standard Carbide Sizing die. When using the Carbide Factory Crimp Die with the Bulge Buster, it is dimensioned to only resize cartridge cases that are over the SAAMI maximum, while the standard Carbide Sizing die squeezes the case down smaller than this dimension.
You can reduce the effort required to push the case through the die by raising, or backing out the die. You want to just push the rim through the die at the very top of the stroke. This is where you have the most mechanical advantage.
To see the product video, follow this link: https://vimeo.com/181805296
