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Message: <blockquote data-quote="UnSafe" data-source="post: 1351795" data-attributes="member: 100">Saw a recent Barnes ad, claiming "whirling destructive power" of a new bullet. Reading that caused me to recall another ad claim years ago, of a buzz saw like effect on tissue by the revolving jacket petals. Possible or BS?Using nominal 300WM data- 180 gr bullet, 3000FPS at the muzzle, 2576FPS at 200yd. At the muzzle, with a 1:10 twist, the bullet is rotating at 3600 rotations per second or 216,000RPM. Fast rotational speed? Hell yes, but still just 1 rotation in 10 inches of forward travel. Even if the rotation speed never decayed and stayed at 3600 RPS, at 800yd/ 1550FPS (approximately half the MV), it would rotate once in 5 inches. Hardly "whirling destructive power" Now, as far as terminal effects (Discounting the terminal effects related to the velocity and expansion, sticking to the rotational effects only). Smack- Bullet impacts deer, nose opens as it pushes through upon the dense, wet tissue. Would rotation of the petals make a difference at 1 rotation in 10 inches (or 5 inches)?; or would it stop rotating quickly because of the resistance to rotation imparted by the tissue on the (now wider/ greater diameter) rotating mass? Question answered/ myth busted?</blockquote>