I think there may be something to this notion that a TSX/TTSX spinning fast may assist in internal damage and straight-line penetration. This is the only TSX I've been able to recover, a 62gr bullet from my 1-8" twist 223AI. It went through a lot of meat and bone on a large hog, and while it did not punch through the hide, there was a very good blood trail due to the amount of blood and foam coming out of the hog's nose and mouth. The petals of the recovered bullet were certainly twisted hard in the direction of the rotation.

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Now with even more aplomb