Ballistic fingerprinting

[driveby]

What percentage of hollow points will be traceable, when recovered? 20%, 50%, 5%? What? For a pistol.

[Struwwelpeter]

None of them are traceable, make sure they're well soft.

[driveby]

What do you mean by well soft?

[Struwwelpeter]

Made entirely of a soft metal, one that will deform to a greater extent and thus further decreasing the likelihood of being identified via forensics.

[5.56 SS109]

Glaser Safety Slugs

/thread

[puzld]

So will they outlaw bullet casting?

[Mantikore]

tracability is a myth

[LSA King]

tracability is a myth




More like a scare tactic by police to try and prevent people from commiting crimes with the thought they can get away with it. Nothing like wearing gloves when loading mags and having hollowpoints in a .40SW. If the first two fail by some magical reason I switch out the barrel with a .357SIG or just buy a new barrel for your pistol after you have shot with it.

[Cliche Guevara]

dude, bullets don't have fingers.

haha jk

Yes. The Black Tallons(now just referred to as Hornady TAP) and other hollow point jacketed bullets will retain the section of jacketing that the rifling is cut into, and therefor will have enough information to match a bullet to a known gun. They can't, however, look up the serial number based just on the rifling for any gun at all. They might be able to match make and model, and check to see if any suspects own a similar firearm.

from yahooooooo answers

[5.56 SS109]

Que?

[Random_Looney]

from yahooooooo answers

When you don't know the veracity of a statement, don't repeat it. That was terribly incorrect.

[Combat Womabt]

When you don't know the veracity of a statement, don't repeat it. That was terribly incorrect.

indeed.
Myth: Every firearm leaves a unique "fingerprint" that can pinpoint the firearm used
"Firearms that generate markings on cartridge casings can change with use and can also be readily altered by the users. They are not permanently defined like fingerprints or DNA."

“Not all firearms generate markings on cartridge casings that can be identified back to the firearm.”

The same gun will produce different markings on bullets and casings, and different guns can produce similar markings.

i believe most of you should recognize where i got this from

[Cliche Guevara]

It never said unique fingerprint, It said they 'might' be able to match make and model. Something completely reasonable.

:facepalm:

[blue_monday]

A few of my acquaintances who are police officers came down to my range and shot their glocks one time. After we found out what big dicks they were, and after they tried to let us let the whole department use our range, we told them to gtfo. After they were gone my dad pulled bullets out of some wood and saved them. Just kind of a "we got your ass" sort of deal. Not like ballistic fingerprinting works though.

Also, said cops were shooting reloaded leadheads outta the glocks, which i thought about correcting them. Then they were assholes.:mad:

[driveby]

So, a traditional lead bullet is made entirely of soft metal? So a teflon steelcore would be traceable?

I also realised last night, DNA is bullshit too. Rape is pretty much the only thing it can solve. They want us to think they have nano-technology that can tell if the DNA was dropped by someone in the process of murder.

[Random_Looney]

It never said unique fingerprint, It said they 'might' be able to match make and model. Something completely reasonable.

:facepalm:

And when you don't know the veracity of a statement....


Reasonable is not correct. And that wasn't the egregious part. The egregious part was that laughable Black Talon issue.

[5.56 SS109]

I'll just make this statement to end all the BS discussion by people who think Yahoo Answers is the end all, be all of firearm knowledge.

Ballistic fingerprinting is a MYTH.

Doesn't matter which gun, what kind of rifling, what kind of barrel.

It's all shit.


Now, maybe, if you deposited a hair, blood, and semen sample into the cavity of a hollowpoint they could narrow it down.

But other than that?

Nah.

[driveby]

This thread has ushered in a wonderfull joy in my life.

[blue_monday]

I'll just make this statement to end all the BS discussion by people who think Yahoo Answers is the end all, be all of firearm knowledge.

Ballistic fingerprinting is a MYTH.

Doesn't matter which gun, what kind of rifling, what kind of barrel.

It's all shit.


Now, maybe, if you deposited a hair, blood, and semen sample into the cavity of a hollowpoint they could narrow it down.

But other than that?

Nah.

God damn it, now what am i gonna do with all my semen tipped bullets?:mad:

[Combat Womabt]

God damn it, now what am i gonna do with all my semen tipped bullets?:mad:

I suggest long range impregnation.

[Shulgin]

In some cases ballistic fingerprinting may work, it is just incredibly unreliable. Like if the bullet had a thick copper jacket and entered soft flesh (minimal deformation). If it was one of the types of guns that leaves rifling marks more clearly and the gun wasn't used much afterwards, competent LE in a lab (possibly a rare thing) would have a chance of matching it to a gun suspected of a crime. This is assuming they obtained the gun afterwards somehow.

[Mel "fuck kikes" Gibson]

Ok, I'm bumping this out of nervousness. What percent chance can a FMJ .38 special be traced to the gun that shot it? What about unjacketed hollows? This is if the bullet went into a trailer.

[The Phreak]

FMJ im pretty sure can be traced. but unjacketed cant cuz it pretty much explodes into peices when it hits. depending on what the fmj hit, your safe. if it hit and hard object:thick metal, thick wood, etc. it would do the same.

[Random_Looney]

When you don't know what you're talking about... don't post.

[samguy700]

do the companies take the balistics of the barrel before it is sold?
and has anybody thought about sodium bullets easy as fuck to make and supposing your a good shot when it hits the person it disolves and leaves the blood around the wound acidic (for the idiots it makes it alkaline bit it has the same efect as acid)

[Random_Looney]

do the companies take the balistics of the barrel before it is sold?
and has anybody thought about sodium bullets easy as fuck to make and supposing your a good shot when it hits the person it disolves and leaves the blood around the wound acidic (for the idiots it makes it alkaline bit it has the same efect as acid)

1. Some do. Live with it.

2. STFU. You don't even probably know what sodium is. Go back to Bad Ideas and/or stop trolling.

[Vargus]

Technically speaking, ballistic fingerprinting is a very inaccurate science. However inaccurate it may be, prosecutors use it many, many times and juries will bite.

To change the fingerprint for damn sure, take a fine file and scrape on the firing pin and extractor where it hooks to the rim, put 50-100 bullets downrange, and put a little bit of grease or oil and some very fine sand on the casing and repeatedly chamber a cartridge, rotate a little, and rechamber a few times. After that, everything that touches the cartridge when it fires should most likely never even come close to being usable as evidence. (You might also want to clean the chamber afterwards. ;))

Btw, ballistic fingerprinting won't mean shit except for tying crimes together or tying a gun that they have in possession to a crime. If I took my gun and shot someone, they can't tell who the hell did it because I am not in their database and I have not commited any other crime with it.

[blue_monday]

do the companies take the balistics of the barrel before it is sold?
and has anybody thought about sodium bullets easy as fuck to make and supposing your a good shot when it hits the person it disolves and leaves the blood around the wound acidic (for the idiots it makes it alkaline bit it has the same efect as acid)

Sodium bullets?

SODIUM BULLETS?

Holy jesus, is it just me or did it just get retarded in here?:facepalm:

[Vargus]

Sodium bullets?

SODIUM BULLETS?

Holy jesus, is it just me or did it just get retarded in here?:facepalm:

It is well within the realm of possibility to cast a lead jacket around a sodium core when in a nitrogen bath. It would be quite expensive, but I would be exceptionally curious to see what would happen when you shot a liquidy object, especially if it were alive.

[BoilingLeadBath]

The melting point of lead is much higher than the melting point of sodium.

Trying to cast lead AROUND a sodium core won't work. Filling sodium/potassium into a lead core will work. (I'd cast in an inert atmosphere glovebox, then top off with some polymer. Melting point of sodium is LOW.)

Drilling (in a press) probably will not be accurate enough to make a cavity, and I don't think most lead molds create bullets with a cavity large enough for this to be interesting, so it might be best to hold them in a collet and lathe out the center a bit.

Or blow-mold some huge (12ga) plastic capsules (perhaps starting with polypropylene test-tubes), drop a small lead ball to the bottom of the capsule, and fill them with sodium. I don't know if you'd even need to build a hollow point into the design, given the softness of sodium.

[Vargus]

The melting point of lead is much higher than the melting point of sodium.

Trying to cast lead AROUND a sodium core won't work. Filling sodium/potassium into a lead core will work. (I'd cast in an inert atmosphere glovebox, then top off with some polymer. Melting point of sodium is LOW.)

Drilling (in a press) probably will not be accurate enough to make a cavity, and I don't think most lead molds create bullets with a cavity large enough for this to be interesting, so it might be best to hold them in a collet and lathe out the center a bit.

Or blow-mold some huge (12ga) plastic capsules (perhaps starting with polypropylene test-tubes), drop a small lead ball to the bottom of the capsule, and fill them with sodium. I don't know if you'd even need to build a hollow point into the design, given the softness of sodium.

You're right. I was thinking sodium shared a high boiling point like sodium chloride.

But yea, if you are hell bent on making such a bullet, you probably have a lathe anyway. :D