Exterior ballistics and ammo manufacturer claims

[UnSafe]

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?

 

[dennishoddy]

Well, can't say about the promo the company puts out, but I will say I've used barnes bullets for many years in a MZ and currently in centerfire. They work better than any bullet I've ever used. on deer sized game, except 1.
Done many autopsies on deer sized game, and can verify they are destructive to internal organs.

 

[UnSafe]

dennishoddy- Agreed, I like Barnes bullets as well and am aware of their great penetration and reliable expansion but question the implication that rotation imparts a greater wounding effect. Granted, if there were no rotational/ gyroscopic stability as the bullet penetrated flesh, it would yaw immediately and expansion would be unpredictable, at best.

 

[dennishoddy]

as the bullet penetrated flesh, it would yaw immediately and expansion would be unpredictable, at best.

As FMJ bullets do. The heaviest end takes over.

I thought the math you did was pretty impressive. Never put a #2 to the question.