9mm Lee Undersizing Die
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The Lee Undersizing Dies size the brass .002" under SAMI specifications to insure proper functioning in semi-automatic handguns.
These dies undersize brass between .002" and .003" are smaller than other Lee Carbide Sizing dies. Ammunition with undersized brass cases will chamber each and every time it is loaded out of a magazine giving reliable chambering each time a round is stripped out of the magazine or loaded into a cylinder.
Competition shooters rely on having ammunition that will feed and chamber each round of ammunition as it is stripped out of the magazine. One of the other benefits reloaders have reported when using Lee U dies is increased consistency and accuracy in loaded rounds because these dies help increase and provide more consistent neck tension on loaded bullets.
The solid carbide insert inside of these dies is ground to a special contour that does not leave a belt mark on the case.
The solid carbide insert is ground to a special contour that does not leave the belt mark on the case. No case lubricant is needed and will actually burnish the case to improve the finish. Will never wear out.
