[finnman69]

Question to gun experts
The anti-gun nuts are going to claim that mandatory ballistics records could have prevented these shootings. How easy is it to change the barrel on weapons like this thereby rendering ballistics records moot?

[js1138]

At least as easy as buying a stolen gun

[antivenom]

LOL! Not one damn gun law has ever detered these types of crimes...only the law abiders guns will be registered...the criminals have an underground network for "their" guns...GENERALLY stolen...so you have a honest gun buyer registering a spent bullet...gun is stolen and reported...OK so NOW the criminal uses the STOLEN registered gun in a crime...you do NOT get any closer to the criminal...only closer to the point of sale.

[spunkets]

"How easy is it"

It's a snap. The only ones this wouldn't work for is for the ignorant and lazy criminals. The real reason they want this, is to create the gun records. They'll want 2 year checks to make sure the "fingerprints" are recent(even shooting the gun will change them). Then as soon as they get the votes needed to ban them, they'll use the lists to collect them.

[lgjhn]

"How easy is it to change the barrel on weapons like this thereby rendering ballistics records moot?"

Rest assured, it wouldn't take long. The barrel could be changed pretty quickly or the existing barrel could be polished a little which would change the profile, or the easiest way would be to just change the bullet weight that is being shot as it would have a different profile.
Most anti-gunners jump on the "bandwagon" without a clue about reality and that's their basic problem to start with.

[Jonah Hex]

Very easy. A few minutes with a Dremel tool and some emory paper, and you've changed the characteritics. With some rifles, you can buy and install a new barrel.

Another way is to steal a weapon. If the system actually matches a round to a weapon, it only leads to the legal owner, not the shooter.

The system doesn't handle the easiest method - use a bolt-action rifle and drop a casing from another weapon picked up at a local range.

Bottom line: gun-signature records will only work with stupid crminials.

[Clean_Sweep]

The anti-gun nuts are going to claim that mandatory ballistics records could have prevented these shootings.

There are now about 300,000,000 guns in the USA. How could all these guns be balisticly tested? The resources and systems will never exist and no-one will cooperate anyway. It's smoke and mirrors.

[Free Trapper]

I'm no expert but I'm thinking even running a brass brush in the barrel will change things enough that bullets won't match.

[Crowcreek]

"How easy is it to change the barrel on weapons like this thereby rendering ballistics records moot?

Very. And shooting an abrasive-coated bulet thru' the bore is an instant alteration of a 'ballistic fingerprint'.

[Sender]

It's very easy to change the barrel on many rifles such as the AR-15.

[Djarum]

The anti-gun nuts are going to claim that mandatory ballistics records could have prevented these shootings. How easy is it to change the barrel on weapons like this thereby rendering ballistics records moot?

Ballistic 'Fingerprint' Scheme Far from a Magic Wand
Ballistic fingerprints.... a really bad idea
Erasing Ballistic Fingerprints