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Public Forums / FBI-Ames Laboratories Decision Analysis Study
« Last post by edsmith on October 19, 2017, 07:50:11 AM »
AFTE Membership,

Scott Chumbly (AMES) would like me to pass along a few reminders about the DAS:

     - He is still waiting on several test packets from the original mailing to be returned, if you could get those to      him as soon as possible that would be great
     - Additionally, he just wanted to remind you, that per the instructions, you will receive anywhere between 4 to 6 packets. So hang in there and don't give up.

Thank you again for your time, expertise and professionalism
Employment Wanted / Seeking Employment - Entry Level
« Last post by William Addison on October 16, 2017, 05:09:25 PM »
     Hello everyone,

   I am an Army veteran and an Applied Forensics Major at Methodist University in North Carolina. I am currently on track to graduate in December and am seeking an entry-level position as a Firearm and Toolmark Examiner.
   While serving with the United States Army I was appointed as a Unit Armorer for one year, which set the groundwork for proper firearms handling, inspections, and maintenance. In addition to this experience, I have received formal blocks of training in both Serial Number Restoration and Shooting Reconstruction while attending the NCIAI conference earlier this year. As a student in the Applied Forensic Science program, I have gained hands-on experience with equipment and techniques that cannot be learned through books.

  I would welcome the opportunity utilize my education, training, and experience to be an effective member of your organization. I am willing to relocate and start work immediately upon my graduation in December. If you have any questions or comments, please contact me at My resume, references, and LinkedIn are available upon request.

Thank you!

William Addison
Applied Forensic Science
Methodist University
Job Announcements / Forensic Firearm and Toolmark Examiner-Afghanistan
« Last post by ken_f on October 10, 2017, 11:35:37 AM »
Forensic Firearm and Toolmark Examiner

Serve as senior consultant to the local Afghan firearm and toolmark examiners on questions of classification, quality control, identifications, and other technical matters concerning firearm and toolmark examination. Serve as instructor and mentor to new and current local Afghan firearm and toolmark personnel.

Clearance: Must Possess Current US Secret Clearance

Medical Fitness: Must Meet Medical Fitness for Deployment

Work Location: Kabul or Herat, Afghanistan

Full Description Attached


Ideal Innovations, Inc. is an Equal Opportunity Employer:

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability, or veteran status
Ideal Innovations, Inc. is a VEVRAA Federal Contractor
Firearm Identification / Re: .22 comparisons
« Last post by Steve Scott on October 06, 2017, 03:30:32 PM »
IMO, it would be extremely difficult (and somewhat foolish) to attempt reload 22 caliber cartridge cases with a jacketed bullet.  The soft brass of the 22LR cc would bear toolmarks reflective of the reloading.

You could err on the side of caution by stating that the firearms will not chamber 22Magnum ammo, which the bullets are characteristic of, remembering that some 22LR revolvers (if you have any) can be equipped with a 22Mag cylinder (which may not have been submitted).
Firearm Identification / .22 comparisons
« Last post by Kevin Rippman on October 06, 2017, 02:33:40 PM »
I have a case where some 40 grain Cu JHP .22 bullets were recovered from autopsy. No cartridge cases. The bullets are 6R and can be readily identified together.

A few .22 LR firearms were submitted for comparison. The firearms are also 6R and have the same LIMP/GIMP measurements as my Cu bullets. .22 Magnum cartridges will not fit in any of the firearms.

Would you fire .22 LR cartridges and compare the lead bullets to the Cu bullet? Or would you eliminate outright because of the implied cartridge difference?

We have been having some internal discussion about the possibility of reloading .22 metal jacketed bullets into .22 LR cartridge cases. We would like to know what other labs would do or if anyone has seen anything like that.
Technical Assistance / Re: Question about drop safeties in revolvers
« Last post by Stacey Phetteplace on October 06, 2017, 07:30:09 AM »
Thanks Bob, that link works
Technical Assistance / Re: Question about drop safeties in revolvers
« Last post by Bob Shem on October 05, 2017, 02:22:23 PM »   .

Scroll down to the “Drop Safeties” section.
Technical Assistance / Re: Question about drop safeties in revolvers
« Last post by Stacey Phetteplace on October 05, 2017, 07:41:02 AM »
Thanks Bob, but that link isn't working for me. But I did a general wiki search and found this link Near the bottom is this general information:

Until the 1970s, when older-design revolvers such as Colt Single Action Armys and Ruger Blackhawks were re-engineered with drop safeties (such as firing pin blocks, hammer blocks, or transfer bars) that prevent the firing pin from contacting the cartridge's primer unless the trigger is pulled, safe carry required the hammer being positioned over an empty chamber, reducing the available cartridges from six to five, or, on some models, in between chambers on either a pin or in a groove for that purpose, thus keeping the full six rounds available. This kept the uncocked hammer from resting directly on the primer of a cartridge. If not used in this manner, the hammer rests directly on a primer and unintentional firing may occur if the gun is dropped or the hammer is struck.

Since my dad taught me handgun safety when I was little and he was poor, he most likely didn't have a 'modern' revolver. :)
Technical Assistance / Re: Question about drop safeties in revolvers
« Last post by Bob Shem on October 04, 2017, 11:41:18 PM »
They go back a long way.  Wikipedia has a good overview.  .

Back in the day, founding member Stan Berg did a lot of AFTE presentations on firearm safeties.  Stan made a living by doing a lot of testifying against gun companies for plaintiffs, typically about the variety of safeties, when the patents were issued, and when the patents entered the public domain.  His presentations were a bit dry but thorough.

Technical Assistance / Re: Question about drop safeties in revolvers
« Last post by Kevin Streine on October 04, 2017, 02:29:51 PM »
I believe it was in the early 70s that Ruger introduced the New Model Blackhawk that featured a trigger transfer bar, replacing the older version where you needed to have the hammer on an empty chamber.
Don't know if they were ahead or behind the curve on that, relative to other manufacturers.
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* Recent Posts

FBI-Ames Laboratories Decision Analysis Study by edsmith
[October 19, 2017, 07:50:11 AM]

Seeking Employment - Entry Level by William Addison
[October 16, 2017, 05:09:25 PM]

Forensic Firearm and Toolmark Examiner-Afghanistan by ken_f
[October 10, 2017, 11:35:37 AM]

Re: .22 comparisons by Steve Scott
[October 06, 2017, 03:30:32 PM]

.22 comparisons by Kevin Rippman
[October 06, 2017, 02:33:40 PM]

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