doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com barrel bulges- PHOTOS

Hi All - Happy New Year!

I would like to get pricing opinions on an Ithaca NID Grade 2 that I am looking at. I realize it can vary wildly without photos. It is a two barrel set with matching serial numbers. Both barrels are 30" and in very good condition. One is IM/F and the other is M/Cyl. One has twin irory beads the other has a single ivory bead. It is tight on face for both barrels. It has a considerable amount of case colors remaining (~70%). The wood is highly figured and in good condition. The only problem with it that I can see it that the stock was shortened. That should be OK for me since I need a longer stock for my tall skinny frame I would put a walnut extension on it and a period appropriate pad. It does have the cocking indicators.

I just got done redoing a field grade NID and I may sell it to finance this gun although I may have to sell my Renato Gamba Hunter Special or Stevens 5100-20 gauge also. Thanks.

I took a closer look at the this gun and one of the barrels has six bulges on the bottom of the right tube about 15 inches from the breech. I don't know how I missed this the first time I looked at it. I have never seen anything like this. You can see the bulges from the inside of the tube also. Otherwise the tubes are spotless. The other barrel is perfect. I suspect the bulged barrel is useless but I would like to know if anyone knows if there is a way to repair bulges.

Thanks.

SIX bulges???? Maybe rivelling? Sounds like you are whistling Dixie here. IMHO, go look for another gun.

it is my understanding that bulges are unrepairable...even if you hammer erm back in, the metal has been weakin and the bulges will most likely come back after a few firings...too bad.

Not to debate on how to fix bulges, but rather what is going on with the metal. Bulges or dents or any other metal yielding cause plastic deformation. The initial deformation and the repair will both serve to strengthen the metal. If there is any thinning due to stretching or filing, this will have to be considered by measuring the final thickness. But let me say it again: this deformation will STRENGTHEN the metal. A barrle that has been cold worked by bulging/denting then cold worked again to remove it, that has say .030 wall in the end will be stronger than one that has not been cold worked of the same thickness. Whether or not you can work bulges out is a separable question.

The stuff being spread around these boards about being weaker is old wives tales.

This is the explanation of steel properties when yielded.

The vertical axis of the chart is stress(load/force). The horizontal axis is strain (movement/deflection)

You can see the metal yield point where it takes a little dip, then all plastic deformation from then on serves to increase the strength until necking (thinning) of the test sample reduces the ability to carry the load.

Unless I mis-read the original post, he has a two barrel set. Why look for another gun when he can use the other barrel set ?

I have worked with Mike Orlen in the past for metal work. Any other ideas who to have look at this barrel?

What's "rivelling"?

Maybe he does not want to pay a premium for an extra barrel that has issues.