What's this "band" on my pulled bullets?

[THT]

I'm pulling some AP .30-06 bullets and noticed a band around the bullet but it's not a crimp. Can anyone tell me what this is?

[CSACANNONEER]

It's called a canular. It's purpose is to give the cripped brass a little something to hold onto. Since you are loading them into a different cartridge than they were originally designed for, just worry about your COAL and don't worry about the canular at all.

[Chief-7700]

It's called a canular. It's purpose is to give the cripped brass a little something to hold onto. Since you are loading them into a different cartridge than they were originally designed for, just worry about your COAL and don't worry about the canular at all.

I thought the groove was called a Cannelure.

[joelogic]

The groove/ring is the cannelure. Are you going to load those in .308? I read that they need to be resized. Are they for sale?

[CSACANNONEER]

I thought the groove was called a Cannelure.

Yea, spelling was never one of my strong points.

[THT]

The groove/ring is the cannelure. Are you going to load those in .308? I read that they need to be resized. Are they for sale?

Not reloading them. They'll be up for sale soon.

[Chief-7700]

Yea, spelling was never one of my strong points.

In the same boat.

[kurac]

Are you sure they are tungsten carbide? a magnet test will tell the truth

[rg1]

This is info I've read about the penetrator of the M2 163 AP 30 caliber bullet: "During WWII, projectiles used highly alloyed steels containing nickel-chromium- molybdenum" (and heat treatment to make them extremely hard and not brittle). I have read that tungsten was tried early in the making and testing by the military but most AP cores are alloyed heat treated steel. Just what I've read from some searching on the web and from others who posted about AP core composition.
The band is a machined crimp cannelure groove. They won't need to be resized if they have not been pulled by demill machinery and have pull-cut marks. It will ease pulling if you push the bullet just a little deeper into the case with your bullet seating die to break the sealant bond between the bullet and case neck.

[Beelzy]

Not reloading them. They'll be up for sale soon.

When!?!?...............................

[THT]

When!?!?...............................

I just pulled 100 and was planning on hitting a gun show with them to see what they're worth.

[THT]

Are you sure they are tungsten carbide? a magnet test will tell the truth

This is info I've read about the penetrator of the M2 163 AP 30 caliber bullet: "During WWII, projectiles used highly alloyed steels containing nickel-chromium- molybdenum" (and heat treatment to make them extremely hard and not brittle). I have read that tungsten was tried early in the making and testing by the military but most AP cores are alloyed heat treated steel. Just what I've read from some searching on the web and from others who posted about AP core composition.
The band is a machined crimp cannelure groove. They won't need to be resized if they have not been pulled by demill machinery and have pull-cut marks. It will ease pulling if you push the bullet just a little deeper into the case with your bullet seating die to break the sealant bond between the bullet and case neck.

I just took a magnet to the bullets I've pulled and they're magnetic. They are NOT tungsten carbide as I was told they were.

[kurac]

They used to sell for about $1 a piece, that was before the CMP released 20 million rounds or whatever it was.

[shadowofnight]

but it's not a crimp.

You are right , that is not meant to be crimped in...which means it is not a cannelure.

That deep groove is meant to reduce the bearing surface of the bullet ...also seen in the newer Barnes solid copper bullets.

You can see in your picture that the groove is deep , deeper than any normal copper jacket thickness. Barnes used to make their solid copper bullets without the grooves in them...and if you used normal reloading data for a given weight bullet with a barnes solid copper bullet...you got much too high a pressure.

With grooves cut into the bullet , you get much less bearing surface on the bullet to interface with the inside of the bore...resulting in less friction and pressure.

I bet those bullets are completely jacketless, I bet they are a solid copper/bronze bullet with a machined out center with a steel or tungsten core.

[shadowofnight]

I just took a magnet to the bullets I've pulled and they're magnetic. They are NOT tungsten carbide as I was told they were.

Then probably solid copper/bronze with the steel core.