Non-Leaded Ammo presents problems for police. [Archive] - Glock Talk

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Trigger Finger
10-30-2012, 17:47
From Gun Digest...Nov 2012.

More and more ammunition makers are going to no-lead bullets. Investigators can reconstruct most crime scenes because they know how lead bullets perform. Many investigators have no idea how lead free bullets will react when fired into different mediums. Michael Knox, crime scene investigator for Jacksonville, Florida.

Dr Sigman, National Center for Forensic Science states that ammunition makers are not replacing lead with another universal material!!!
each Manufacturer is using their own combination of metals and materials. And they are not sharing that information. It's considered proprietary information!!

FYI.

larry_minn
10-30-2012, 20:34
Maybe this is why Mass Ayobbe (sp) suggests you do NOT use hand loads for CCW.
I would think what its made of would not matter. If factory they can get ammo that is from same lot/do test. (if its a big enough case to warrent CSI like TV) :)

Morris
10-30-2012, 21:37
State labs or large agencies will have to be the ones to build databases on wound patterns with non-lead rounds. Or, there will be legislation made to demand bullet makers to submit data and information to labs.

blueiron
10-30-2012, 21:42
The FBI, ATFE, DoD, and many independent labs, including HP White, have already conducted tests with tungsten-nylon, sintered metals, tin, bismuth, and other suitable low environmental impact projectiles. Many larger M.E. offices nationwide are seeing the results. The Journal of Forensic Medicine and Pathology [Dr. Vincent Di Maio - executive editor] is on top of the research.

Keep in mind that ATFE doesn't allow release of bullets onto the market unless they have been reviewed and deemed "suitable for sporting use".

Gun Digest is not exactly on the cutting trends in forensic science, as it relates to ballistics. Perhaps they are simply riling up their readers to increase subscriptions or firearm assaults?

blueiron
10-30-2012, 21:54
Dr Sigman, National Center for Forensic Science states that ammunition makers are not replacing lead with another universal material!!!
each Manufacturer is using their own combination of metals and materials. And they are not sharing that information. It's considered proprietary information!!



Not certain if this is the esteemed authority mentioned and referenced in the article, but here is the University of Central Florida info on Dr. Sigman.

Michael Sigman
Associate Professor, Chemistry
Assistant Director for Physical Evidence, National Center for Forensic Science

As such and as a Ph.D. in physical organic chemistry at Florida State University, it is a simple and routine matter to take an unknown lump of metal and subject it to mass spectroscopy analysis to determine its composition. Copper, lead, bismuth, tungsten/wolfram, tin, etc. are all elemental metals and any upper division undergrad in chemistry could test a sample to ascertain these metals and the percentage by mass.

Chemical binders would be a bit more difficult, but shouldn't be a problem for graduate or higher level students.

The manufacturing process is proprietary, but not the chemical composition. Coke, bullet composition, a restaurant's secret sauce, etc. are not secret from the average chemistry lab.

Trigger Finger
10-31-2012, 00:54
Good response blueiron. Thanks for a more insightful view of this subject. :supergrin: