Well out of curiosity I went out and cut the gun barrel into six inch pieces.Yes it was a old military rifle barrel with the reciever in tack. Well I took a piece that was in the center of the barrel and put it into the fire.I let it start heating then fluxed it and put it back into the fire.When it got up to welding heat I started on one end and closed the hole up and then heated it again then this time out I made sure that I welded the hole together and with over lapping blowes I welded the piece half way and then turned it around in the fire fluxed and then welded it the rest of the way.Then I flattened and stretched it to 1/8 inch thick.
Then I took the piece and put it into the fire and brought it up to non-magnetic and quenched it.After letting it cool I stuck a inch of it in the vice and lightly hit it with a 3 pound hammer.I had checked it with a file and it showed to be hard.But after hitting it I KNEW it was hard as the piece shattered into several pieces like glass.COOL

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Now all we would have to do is figure out the drawing heat and try the blade out and see just how tough it would be.
I still think it would work great in a Damascus mix which I am going to try soon and see what it acts like in the mix.
So my impression is YES it will make a knife blade that will hold a edge.
A little word of advice here is to aleays check the barrels for any kind of obstructions and make sure they are cleaned with no kind of powder residue left in the barrel.This way you won't have any bad accidents...
Now go cut a piece and try it out.You never know when a guy would like to carry his favorite rife to the woods and have a piece of the same kind of rifle as his knife also.with a piece of a old gun stock as the handle,and the guard could be made from any of the metal plates omn the old rifle or the trigger guard.Man could I think of a really cool knife made from all these old parts.Looks like I will have to make a trip to the local gun smiths shop and see what he has laying around that I can pilfer and try....
Bruce