Inside The Barrel Of A Rifle

[Welsh_red 4,613]

I was out shooting clays with friends today and I heard one bloke say to another while talking about inside the barrel of his FAC rifle

 

" the grooves are there so the police can track bulletts back to the individual rifle "

 

I'm not that knowledgable about guns but even I know that the twisted grooves are to keep the pellet or bullet running straight . I remember my dad telling me as a kid something about gyroscopic effect .

 

Now taking away the fact the bloke is a bit of a bell sometimes and thinks he knows it all he thinks that every gun has its own kind of groove like a licence plate on a car . I know that can't be true as every gun ever made would have to have its own kind and their would have to be some sort of register . But he claims a experienced shooter told him and it got me thinking about whether there is some truth in tracing a bullet back to a gun by the grooves in the inside of a barrel

 

After the last few days on here I imagine people's thought would be I've shot something somewhere and Am worried about cops finding out lol but that's not the case . Would just like some info and ammo to throw his way tmrow when I go shooting with him . Shut him up a bit . Said to me " you've got a lot to learn grasshopper" when I challenged him on his theory as to why their there

[walshie 2,804]

The grooves are rifling to impart twist to the bullet and give it stability in flight. In theory the grooves on a bullet could be matched to the rifling on a particular gun if the bullet wasn't smashed or squashed on impact - which they are. Unless of course Gil Grissom from CSI has a way of unsquashing the bullet for examination.

 

In answer to your mate - No it's not there to match the bullet to the gun and Yes, he is a bellend.

[Slippery_Weasel 460]

I don't believe they are individual by design. It may be that forensics can connect a bullet with a gun if they have both in their possession and stuff like twist rate etc will be a factor in identifying it but there will be other guns that would produce similar marks on the same brand of bullet. but it' won't be the same as a finger print.

 

Forensics isn't always as black and white as they make out on csi etc

[Rez 4,957]

I don't believe they are individual by design. It may be that forensics can connect a bullet with a gun if they have both in their possession and stuff like twist rate etc will be a factor in identifying it but there will be other guns that would produce similar marks on the same brand of bullet. but it' won't be the same as a finger print.

 

Forensics isn't always as black and white as they make out on csi etc

Whatever. That little disabled lady that whizzes round in her electric chair on Silent Witness knows who's done it before they've done it

[Slippery_Weasel 460]

 

 

I don't believe they are individual by design. It may be that forensics can connect a bullet with a gun if they have both in their possession and stuff like twist rate etc will be a factor in identifying it but there will be other guns that would produce similar marks on the same brand of bullet. but it' won't be the same as a finger print.

 

Forensics isn't always as black and white as they make out on csi etc

Whatever. That little disabled lady that whizzes round in her electric chair on Silent Witness knows who's done it before they've done it

Lol!

Sometimes they have it cut and dry but mostly they use the threat of forensics to get people to be honest in statements

[walshie 2,804]

I don't believe they are individual by design. It may be that forensics can connect a bullet with a gun if they have both in their possession and stuff like twist rate etc will be a factor in identifying it but there will be other guns that would produce similar marks on the same brand of bullet. but it' won't be the same as a finger print.

 

Forensics isn't always as black and white as they make out on csi etc

 

Exactly. A 1:12" twist is a 1 :12" twist, so they might be able to tell the twist rate of the gun it came from, but there might be minute differences between individual guns (unintentionally) that could theoretically tell them apart if they could find a bullet to examine.

 

His mate's still a bellend though. I wonder if he really has a FAC?

[Slippery_Weasel 460]

 

 

I don't believe they are individual by design. It may be that forensics can connect a bullet with a gun if they have both in their possession and stuff like twist rate etc will be a factor in identifying it but there will be other guns that would produce similar marks on the same brand of bullet. but it' won't be the same as a finger print.

 

Forensics isn't always as black and white as they make out on csi etc

Exactly. a 1:12" twist is a 1 :12" twist, so they might be able to tell the twist rate of the gun it came from, but there might be minute differences between individual guns (unintentionally) that could theoretically tell them apart if they could find a bullet to examine.

 

His mate's still a bellend though. I wonder if he really has a FAC?

Exactly a total bell. Unless the barrel has been hand made by the geeky guy from day of the jackal it's been factory made, there will be 000s like it, the differences will be impossible to see. Especially after it's been smashed through stuff.

 

If someone were to commit a crime with one, dump it at the scene then maybe they could use ballistics to prove a connection. Otherwise forget it

[random 659]

I think a barrel that is made as part of a batch will still be individual to some extent,under a microscope there'd be little marks and scratches etc that can be transferred to a bullet travelling down it,like a fingerprint they'd be unique,the whole bullet would be marked so only a portion of it need be left to find some markings,the gun would then need to be found to compare it to for conformation,a casing can be traced to a gun by the mark left from the firing pin as well I believe,any how whatever the chances and possibility of id of a bullet its not what the rifling in his barrel is for,get him to shoot a pre rifling barrel and get a PIC of his groups! At least they'd be unidentifiable

[moxy 617]

:laugh:

[bigmac 97kt 13,776]

Yes they can match a bullet to a gun but they need both the gun and the bullet

 

Why do you think crims get rid or destroy the weapon after they shoot some one

 

and by the way your mate is wrong and yes he is a

 

BELL END

 

atvbmac :thumbs:

[charlie caller 3,654]

Total prize bellend

[walshie 2,804]

Yes they can match a bullet to a gun but they need both the gun and the bullet

 

Why do you think crims get rid or destroy the weapon after they shoot some one

 

and by the way your mate is wrong and yes he is a

 

BELL END

 

atvbmac :thumbs:

 

Probably easier to get a match on one of your guns Mac, as the teeny-tiny bit of power and minimal velocity they are subjected to wouldn't really deform the projectile.

[bigmac 97kt 13,776]

Total prize bellend

Sounds like ,,,,,,ALL THE GEAR BUT NO I DEAR,,,,,,,,

 

and by the way he is talking i would be supriced if he has fac to

 

atvbmac :thumbs:

[bigmac 97kt 13,776]

 

Yes they can match a bullet to a gun but they need both the gun and the bullet

 

Why do you think crims get rid or destroy the weapon after they shoot some one

 

and by the way your mate is wrong and yes he is a

 

BELL END

 

atvbmac :thumbs:

 

Probably easier to get a match on one of your guns Mac, as the teeny-tiny bit of power and minimal velocity they are subjected to wouldn't really deform the projectile.

 

:feck:

 

:laugh:

 

:air_kiss:

 

I still loves ya

[bigmac 97kt 13,776]

 

 

Yes they can match a bullet to a gun but they need both the gun and the bullet

 

Why do you think crims get rid or destroy the weapon after they shoot some one

 

and by the way your mate is wrong and yes he is a

 

BELL END

 

atvbmac :thumbs:

 

Probably easier to get a match on one of your guns Mac, as the teeny-tiny bit of power and minimal velocity they are subjected to wouldn't really deform the projectile.

 

:feck:

 

:laugh:

 

:air_kiss:

 

I still loves ya

 

TWAT