Asked by a friend if unburnt powder can exit a barrel and accumulate on a range floor. I told him yes as I've seen it in the barrels of most of my pistols while cleaning them.
Whaddya think?? Am I correct?

Yep,

Depending on the load and powder you will get a lot of zombies which are partially burned grains.

Unroll some plastic and fire a 44 Mag loaded with 2400 over it.

Your timing could not be better. Have him turn to pages 62 & 63 in "your" Sep08 NRA American Hunter and take a look.

On page 63 is what appears to be a Handgun Bullet to me(though the article is about Rifle Bullets? ) flying along with a string of Clear Air Turbulence(CAT) trailing along behind it.

Now, back on page 62, at about 1 o'clock from where it says Field "Editor" is a small "Round Object" which also has CAT following along indicating to me that it is moving in the same direction as the Bullet, at nearly the same speed and not just a stationary Black Dot in the flick.

What would you and your buddy think that small Round Object happens to be?
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You can also suggest that he talk to a Coroner in a city which has a good bit of drug fights involving revolvers/pistols at a relatively close distance or a good number of suicides. Ask the Coroner if he ever finds unburned Gun Powder near an Entrance Hole.
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Is this completely out-of-touch with Reality Government Agency in the USA Government?

Great answers. Exactly what I was looking for.

Yes you are correct. Many years ago when shooting in an indoor range just north of NYC, the booth caught fire from the unburned powder which had accumulated over the year. Ruined a good target, but was handled well by those present!

Hot core is refering to the powder tattooing from GSW's and their residue.

My uncle was an armourer in Egypt during WWII. He told me of how they used to sweep up the unburned or partially burned powder from in front of the 50 Browning machine guns. So, yes.

I used to get unburned powder in my 44 mag barrel if I did not load it up hot enough. My gun had a heavy hammer and so did not need to be too hot to burn clean but some folks found it necessary to use magnum primers to get clean burning.

In 1994, in northern Italy, a policeman (Carabiniere) died and several were injured due to a blast and fire in an indoor range. The accident was caused by the accumulation of unburned powder exiting the barrel.

Yes it does, and it doesn't just happen in handguns.

quote:

Originally posted by 308Sako:
..Hot core is refering to the powder tattooing from GSW's and their residue.

Hey 308Sako, Thank you. Didn't know they used the term "tattooing", but it fits.
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By the way old4x4, I was thinking more about the question last night and would say "it depends on the Load". Some light Target Loads do seem to consume all the Powder for me. But as I get into the Bambi-Blaster Loads, using the slower Powders, then I do see some Powder Particles.

So, yes it can happen, but it depends on the Load. The Government Agency that would ask such a question should be completely shut-down and that bunch of deadbeats tossed out.

Best of luck to you.

quote:

Originally posted by wildboar:
In 1994, in northern Italy, a policeman (Carabiniere) died and several were injured due to a blast and fire in an indoor range. The accident was caused by the accumulation of unburned powder exiting the barrel.

We had a similar accident on a poistol shooting range here some years ago. Unfortunately this seems to happen on indoor ranges, several shooter died, if I remember well because of suffocation.

Yes, you are correct. You also have just provided yourself with a rsponse to use when some self-ordained "ballistics expert" starts telling you the muzzle flash you see at the end of a barrel in the twilight or later can't include burning powder...he'll say something like "All the powder burns in the first 1-to-3" of the barrel ahead of the cartridge case." Yeh, right!!

quote:

The Government Agency that would ask such a question should be completely shut-down and that bunch of deadbeats tossed out.

Best of luck to you.

It's not a branch that really ever deals with this kind of thing. I'd get reamed if I went into any more details...really

I believe you and understand. If you can tell them what "I said" without getting yourself in a pile of clinton, feel free to do so.