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According to several articles and ads published in 1987 and 1988, it was a bullet with the following characteristics: “would create a more destructive permanent wound channel”; “works like a cookie cutter, and when it hits flesh, it slices a tubular section completely out of the center of the wound channel”; “50% less recoil”; “faster than any other handgun bullet”; “designed not to penetrate a class 2 body armor” (sic). The latter was the copper variant, since the earlier brass variant was classified as “AP” by the ATF.
However, according to wound ballistis tests carried on by several forensic labs, it performed like a solid non-expanding bullet with a limited penetration. They also state that there is no real evidence of the “cookie cutter” effect on autopsy and that this effect was only observed in gelatin shots.
The .44 S&W Special load was introduced in 1990 but already dropped in 1991, due to poor sales.