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Author Topic: Machined bullet  (Read 1593 times)

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Offline kgarrison

  • Posts: 12
  • Gender: Male
Machined bullet
« on: July 16, 2021, 12:53:23 PM »
I received six 380 Auto caliber cartridge cases with casework recently and noticed machining marks on the bullet.


I thought it was interesting and wondered if anyone has had experience with these before.


What I noticed most was that there was still leftover chips in the grooves that were cut into the solid copper bullet.


Would the chips and gross machining marks interfere with comparisons at all?
Kirk Garrison
Firearms and Toolmarks
San Bernardino County Sheriff's Dept.
Scientific Investigations Division
kgarrison@sbcsd.org

Offline Axel Manthei

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  • Firearms Examiner
    • CartWinPro - The Ammunition Knowledge Base
Re: Machined bullet
« Reply #1 on: July 17, 2021, 05:29:24 AM »
Kirk,
it looks like a copy of a LeHigh Defense L.L.C. bullet.

https://www.lehighdefense.com/

LeHigh has only be seen with four cuts so it is reasonably to assume it is a copy.

All the best
Axel


Offline Zachary Kotas

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Re: Machined bullet
« Reply #2 on: July 19, 2021, 10:43:14 AM »
They look like G9 ammo.


https://g9defense.com/

Zach Kotas
Denver Crime Lab
720-337-2025
zachary.kotas@denvergov.org

Offline Humpy

  • AFTE Friend
  • Posts: 15
Re: Machined bullet
« Reply #3 on: September 05, 2021, 09:01:15 AM »
There was a design developed at Aberdeen Proving Ground in 82 called a Metallic Deep Penetrator  for 9MM that would penetrate 100 layers of kevlar and stop quickly with the body.  That was from 100 yards IIRC.


It was a pointed bullet with a hollow cavity in base to allow more propellant to be put in 9MM case.  The bullet was made on a lathe from copper rod.


The designer (long ago passed) estimated that loaded in a 357 magnum would penetrate 150 layers

 

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