Question on guns

[Prowler]

I notice how people say that bullets can be traced. How is this? And lets say the gun is used in crime, and you get a new thing of ammo, how can they trace the ammo to your gun?

 

[SCW]

The marks left by the rifling of the barrel are unique to the type of gun assuming it is not a shot-gun without rifling.

30 seconds with a rat-tail file and the marks are changed. Tracable is a misnomer, then can establish if it was fired from that type of gun and in most instances from that specific gun, but there is no way for them to 'trace' the marks on a bullet back to you. There is no database of rilfe marks. They would have to have the gun and shoot another round so see if the marks match.

 

[JNickel101]

believe they can match the round to the barrel based on the grooves in the barrel and the groves in the round...

use ballistic tips, pretty sure they shatter on impact

wait....does answering this question make me an accomplice?

 

[Blaine B.]

You planning on shooting somebody?

 

[bjoehandley]

wait....does answering this question make me an accomplice?

Probably should have asked that first Nickel.......................:wave1:

 

[8Mud]

They can also match the firing pin indentation and the extractor marks. And there is a *data base* for bullets, at least overseas. They save two fired rounds out of every gun produced and *scan* the rifling on the bullets. They used to photograph them, this is really old policy.
There are also tracers (color coded non burning fillers) embedded in the propellant for manufactured cartridges, kind of a primitive bar code. They were contemplating requiring enough tracers in the powder to identify the lot number, before 9/11. I imagine that is now a done deal and may have been expanded to even finer identification..

 

[5-90]

There are toolmarks left on the projectile, on the primer, and on the cartridge case by the rifling, firing pin/breechface, and extractor respectively. Also, there are sometimes marks left upon the brass casing by the chamber, and all that can add up to a "fingerprint" for a particular firearm parts combination.

Note that I don't say "a particular firearm" - a quick field-stripping and the change of a couple of parts can invalidate a ballistic trace immediately. Ballistic matching is more "art" than "science" - and depends largely upon the ignorance of criminals in general.

 

[woody]

Shhh gdammit!

 

[5-90]

Shhh gdammit!

No worries - I'm fairly sure that most of the tricks for not leaving traces in the first place aren't common knowledge...

 

[Prowler]

O, ok I didn't no that rifleing took that affect.
Thanks for the info!
And no, I'm not planning to shoot anyone.

 

[RichP]

Actually I prefer sabot rounds....from about 200 yards +.... if you are going to do it, do it right and with forethought and correct shot placement, remember to police your plastic and brass.

On another note, it would not surprise me if the US manufacturers are saving the test firings and mapping production guns into a database. It is one of those 'duh' things if you were putting together the 'classified' portion of the patriot act I would think. After all every high end rifle I have bought in the past has come with the test fired target, at least every Sako and Weatherby has, lets you see what the rifle is capable of grouping out of the box from a machine rest.

 

[woody]

Another thing a lot of folks fail to consider is that certain guns leave distinctive evidence

Like a H&K has unique polygonal rifling in the barrel, unlike 'any' other pistol. And Glocks (maybe others too?) have a rectangular firing pin... makes an odd-looking dent in the primer.

Probably the best bet is to dismember your victims with a 'throwaway' chainsaw, and feed the leftover parts to some wild pigs. It's also a much more therapeutic killing to administer than mere gunshots or stab wounds. Start with their toes and work upward.

 

[Wayne Sihler]

Another thing a lot of folks fail to consider is that certain guns leave distinctive evidence

Like a H&K has unique polygonal rifling in the barrel, unlike 'any' other pistol. And Glocks (maybe others too?) have a rectangular firing pin... makes an odd-looking dent in the primer.

Probably the best bet is to dismember your victims with a 'throwaway' chainsaw, and feed the leftover parts to some wild pigs. It's also a much more therapeutic killing to administer than mere gunshots or stab wounds. Start with their toes and work upward.

Woody ! Your starting to worry me.However if I ever need a job done ---
On the tracers in gunpowder that was dropped as the amount of trace elements to identify all the variables would have made the powder unstable and changed the pressure rates/burn speeds.
Wayne

 

[XJ&CHZ4ME]

Oh how you are all so, so correct! If only I would have known this information EARLIER!!! Well, I gotta run boys, the warden is coming to let me out for my hour of exercise........hope I dont take a shank to the neck.

Later...
Inmate#NE14692X

 

[89Daytona]

there is no way for them to 'trace' the marks on a bullet back to you. There is no database of rilfe marks. They would have to have the gun and shoot another round so see if the marks match.

I thought there was a database of rifling marks of guns used in crimes. Lately I have heard talk of law makers wanting to make a database of all the new guns.... it seems kinda pointless though if all a criminal has to do is use a file on a few components to make it "untraceable".

 

[RichP]

I thought there was a database of rifling marks of guns used in crimes. Lately I have heard talk of law makers wanting to make a database of all the new guns.... it seems kinda pointless though if all a criminal has to do is use a file on a few components to make it "untraceable".

Criminals are not criminals because they are smart, if they were smarter they would use legal ways of stealing, like running for office, credit card company, etc.

 

[JoesXJ]

I thought there was a database of rifling marks of guns used in crimes. Lately I have heard talk of law makers wanting to make a database of all the new guns.... it seems kinda pointless though if all a criminal has to do is use a file on a few components to make it "untraceable".

I just bought a Smith & Wesson M&P40 CLICK HERE and included with the gun was a test fired bullet for me to keep....they kept one too for "data base" records. Its there to show the markings my barrel makes when a bullet is fired.