MashieNiblick
Member
Take a look at the video at the bottom of the page of the following link:
- http://www.hornady.com/store/380-Auto-90-gr-Critical-Defense/
The video is of a 90gr 9mm diameter hollow tip penetrating through a layer of FBI down.
Hornady states 1000 ft/s for this round out of a 4" barrel.
In the video, the bullet exhibited a 6" major wound cavity with total penetration = 10".
It further stated that typical HP rounds would plug, act as an FMJ, penetrate entirely through target with minimal expansion, and thus, only a small percentage of the bullet's potential energy would be transferred to the target.
Another point: i believe, correct me if i am wrong, that a bullet's expansion is to a large extent proportional to the bullet's deceleration when within target.
Which gets me to thinkin' (again, correct me if i am wrong). . .:
- A full house .357 magnum round, 125gr, at 1450 ft/s, through an identical length 4" barrel, would:
-- Overpenetrate the target
-- Have minimal expansion due to the conservation of its momentum as a product of its increased mass,
therefore
-- the energy transferred to the human target by the full house .357 magnum would be less than that of the .380, the wound cavity would be less ideal, and the internal tissue damage would be less severe
Good thing Hornady modifies its bullets' designs with relation to optimal expansion to accomodate the different bullet weights and calibers- .380, .38 special, .38 special + P, and 9mm.
I'll still fire my full house rounds at the local range for effect, and carry them within my revolvers just in case i need to penetrate something in front of the cowardly perps we have here locally.
Cheers!
- MN
- http://www.hornady.com/store/380-Auto-90-gr-Critical-Defense/
The video is of a 90gr 9mm diameter hollow tip penetrating through a layer of FBI down.
Hornady states 1000 ft/s for this round out of a 4" barrel.
In the video, the bullet exhibited a 6" major wound cavity with total penetration = 10".
It further stated that typical HP rounds would plug, act as an FMJ, penetrate entirely through target with minimal expansion, and thus, only a small percentage of the bullet's potential energy would be transferred to the target.
Another point: i believe, correct me if i am wrong, that a bullet's expansion is to a large extent proportional to the bullet's deceleration when within target.
Which gets me to thinkin' (again, correct me if i am wrong). . .:
- A full house .357 magnum round, 125gr, at 1450 ft/s, through an identical length 4" barrel, would:
-- Overpenetrate the target
-- Have minimal expansion due to the conservation of its momentum as a product of its increased mass,
therefore
-- the energy transferred to the human target by the full house .357 magnum would be less than that of the .380, the wound cavity would be less ideal, and the internal tissue damage would be less severe
Good thing Hornady modifies its bullets' designs with relation to optimal expansion to accomodate the different bullet weights and calibers- .380, .38 special, .38 special + P, and 9mm.
I'll still fire my full house rounds at the local range for effect, and carry them within my revolvers just in case i need to penetrate something in front of the cowardly perps we have here locally.
Cheers!
- MN