Pennsylvania Firearm Owners Association
Page 4 of 4 FirstFirst 1234
Results 31 to 39 of 39
  1. #31
    Join Date
    Aug 2013
    Location
    Lehigh Valley, Pennsylvania
    (Lehigh County)
    Posts
    3,146
    Rep Power
    21474850

    Default Re: new bill to ban sale of guns that don't microstamp

    Quote Originally Posted by pacodelahoya View Post
    If I'm not mistaken, a recently retired fbi forensic guy said that most of the ballistics matching is smoke and mirrors, I believe there is a thread on it in here.
    1000 posts, yay me..
    Welcome to the club! Ain't it grand.

    I seem to remember reading that they can identify barrel twist, and major grooves, but not necessarily the specific gun unless there are unusual scratches that can be specifically identifed.
    Illegitimus non carborundum est

  2. #32
    Join Date
    Feb 2010
    Location
    Levittown, Pennsylvania
    (Bucks County)
    Posts
    9,636
    Rep Power
    21474860

    Default Re: new bill to ban sale of guns that don't microstamp

    Firearms and expended projectiles examination is not magic, voodoo or bullchit. Those who do not understand it have probably never peered through a microscope and have no appreciation for the minutia world.

    Two objects cannot contact with force without a transfer of materials occurring. That transfer upsets object 0ne which sheds some and gains other, and upsets object Two by the same process. That change applies to machine tools. If it didn't, tools would never wear out.

    The tool used to bore a barrel leaves traces of machining in the bore caused by the minute imperfections of the tool. It also changes the marks on the tool. Each time the tool makes a new bore, it leaves a different set of markings. The same goes for rifling tools and the rifling the tool produces.

    Ergo, each rifled barrel is as unique as a fingerprint. The bullet that traverses picks up markings from all these imperfections. It being softer, the bullet gets all the change while the steel barrel changes so minutely, the change takes place over a long period from thousands of rounds. Thus, an expended projectile intact enough to examine, can be matched to the firearm it traversed by firing another appropriate bullet and comparing them microscopically.

    Any agent who would say the process is smoke and mirrors would be a class one asshole, or class two if he really didn't know what he was talking about.

    If it was smoke and mirrors, the courts would not accept the expert testimony, much as they won't admit polygraph results.

  3. #33
    Join Date
    Sep 2015
    Location
    zelienople, Pennsylvania
    (Beaver County)
    Posts
    956
    Rep Power
    21474845

    Default Re: new bill to ban sale of guns that don't microstamp

    I have heard that after a gun has been used in a killing it is then "hot" and is shipped off to Mexico.

  4. #34
    Join Date
    Sep 2010
    Location
    ., Pennsylvania
    Posts
    2,718
    Rep Power
    21474852

    Default Re: new bill to ban sale of guns that don't microstamp

    Quote Originally Posted by Bang View Post
    Firearms and expended projectiles examination is not magic, voodoo or bullchit. Those who do not understand it have probably never peered through a microscope and have no appreciation for the minutia world.

    Two objects cannot contact with force without a transfer of materials occurring. That transfer upsets object 0ne which sheds some and gains other, and upsets object Two by the same process. That change applies to machine tools. If it didn't, tools would never wear out.

    The tool used to bore a barrel leaves traces of machining in the bore caused by the minute imperfections of the tool. It also changes the marks on the tool. Each time the tool makes a new bore, it leaves a different set of markings. The same goes for rifling tools and the rifling the tool produces.

    Ergo, each rifled barrel is as unique as a fingerprint. The bullet that traverses picks up markings from all these imperfections. It being softer, the bullet gets all the change while the steel barrel changes so minutely, the change takes place over a long period from thousands of rounds. Thus, an expended projectile intact enough to examine, can be matched to the firearm it traversed by firing another appropriate bullet and comparing them microscopically.

    Any agent who would say the process is smoke and mirrors would be a class one asshole, or class two if he really didn't know what he was talking about.

    If it was smoke and mirrors, the courts would not accept the expert testimony, much as they won't admit polygraph results.
    shh, next thing they will require every single barrel be slightly different so they have a circumference "barcode" to identify with.
    There is no way to make it out alive...

  5. #35
    Join Date
    Jun 2010
    Location
    Next to the Corn
    Posts
    3,833
    Rep Power
    21474853

    Default Re: new bill to ban sale of guns that don't microstamp

    Several swipes with a stone and the micro stamping is gone. This is the same goal as the "smart guns", add cost and be a pain the ass.

  6. #36
    Join Date
    Mar 2008
    Location
    Sterling, Pennsylvania
    (Wayne County)
    Posts
    6,038
    Rep Power
    21474859

    Default Re: new bill to ban sale of guns that don't microstamp

    New business, refurbish and replace firing pins with false #.

  7. #37
    Join Date
    Sep 2010
    Location
    ., Pennsylvania
    Posts
    2,718
    Rep Power
    21474852

    Default Re: new bill to ban sale of guns that don't microstamp

    Quote Originally Posted by Qtrborecrazy View Post
    New business, refurbish and replace firing pins with false #.
    bah, i would start a business that puts this on them.
    or the optional "u mad bro?"
    There is no way to make it out alive...

  8. #38
    Join Date
    Apr 2014
    Location
    Pittsburgh, Pennsylvania
    (Allegheny County)
    Posts
    4,004
    Rep Power
    21474850

    Default Re: new bill to ban sale of guns that don't microstamp

    Quote Originally Posted by eagleclaw View Post
    ...the possibility that criminals and maybe even police agencies will invent a way to forge microstamping numbers...
    Guaranteed that it already has been invented.

  9. #39
    Join Date
    Apr 2014
    Location
    Pittsburgh, Pennsylvania
    (Allegheny County)
    Posts
    4,004
    Rep Power
    21474850

    Default Re: new bill to ban sale of guns that don't microstamp

    Quote Originally Posted by dkf View Post
    Several swipes with a stone and the micro stamping is gone. This is the same goal as the "smart guns", add cost and be a pain the ass.
    Not a problem. Just make possession of such a gun a felony, with "it wore off" as a non-defense....which is their real goal.

    Quote Originally Posted by Qtrborecrazy View Post
    New business, refurbish and replace firing pins with false #.
    Same guys currently remove serial numbers from frames. I'm sure they would be happy to expand into a new area.

Page 4 of 4 FirstFirst 1234

Similar Threads

  1. Replies: 44
    Last Post: March 12th, 2015, 06:44 PM
  2. bill of sale
    By BIRTHMACHINE in forum General
    Replies: 4
    Last Post: March 30th, 2010, 08:21 PM
  3. Bill to Tighten Sale of Guns Is Turned Back in Virginia
    By fultonCoShooter in forum General
    Replies: 0
    Last Post: January 25th, 2008, 03:51 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •