+++++ a nice find, but, what a mess! +++++

Here's a question: When c96 barrels are relined, do they reline the chamber too? If so, that would be the direction I would go to restore it. Or perhaps reline just the chamber if the barrel is ok?

I've also seen a c96 relined to .22, the barrel channel was offset towards the top of the barrel if I remember correctly. That sort of relining can definitely tke the pressure of the .22 even with the original chamber drilled.
 
plinker 777 said:
You're joking right? You want an algorithm, or just a straight forward calculus formula?:sok2
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7.63 Mauser pressure is 37,000psi and an 1/8" plug only has a surface area of 0.018 to push against which is only about 700 psi of thrust on the plug itself no?. That's why I figured a decent amount of threads could hold. It would seem to have a lot of thread surface area/hole diameter. I've seen 2 Kms of 2 7/8 tubing pulled out of well with a joint midway that was only made up by two threads. What's the formula too determine thread strength? I'm three deep on my day off please correct me if my maths are out too lunch.
 
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If I were to plug that hole, and clean up the chamber, the last thing I would do is weld it over or silver solder it. A threaded plug should take any stress from firing.

I'd leave it as is. If I wanted to fire it, I would find another barrel unit, swap that on for the range.
 
myself I would setup in the cnc and thread mill a shallow taper thread around 2 degrees, then thread a tool steel pin taper thread, set the receiver in a oven at 140C, put the rod in a freezer and tighten the crap out of it, clean the chamber and outside and good to go,
 
ShawnC6 said:
A stainless plug with a carbon barrel would only promote corrosion
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It would not promote it. The carbon might, to some degree, bind with the chromium in the stainless and reduce the effectiveness but it certainly would not promote the corrosion. Either way the discussion is about fixing a barrel, not the properties of different metals.
 
Looking at the pictures on a phone, it looks like the pin is about where the web is.

If that's the case, I'd be asking myself "how much less supported is this chamber than a glock chamber?"

And if the answer is "not much" I'd thread in the rod of similar metal (not stainless), ream it, and give it a go.

Presumably it's not going to see thousands upon thousands of rounds.

I didn't check the math earlier in the thread but the 700 lbs estimate would be inside the brass, no?

Outside the web, what kind of pressure are we talking? Not really that much, I'd guess.

Not advising you to do anything but I wouldn't personally hesitate to try it if the alternative is resigning it to the scrap heap.
 
I would take out the pin, and stick some spinach in there. Any time I eat anything with spinach, it's impossible to get it all out of my teeth, so it should work. When my mother-in-law comes over to visit, she's nearly impossible to get out too, but she is of a much higher calibre, and would be much more suitable for use on the paris gun, or big bertha.
Letters_ParisCannon.jpg
 
I'm pretty sure that it would be 700 on the pin itself. It wouldn't seem too be any different than a tapping to measure chamber pressures but with even less stress on a much smaller fitting. Then again that little barrel might not have the meat for that even with such small force on the pin. How is it different than this?
st_cuppsireloaddata_200905-b.jpg
 
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laurencen said:
myself I would setup in the cnc and thread mill a shallow taper thread around 2 degrees, then thread a tool steel pin taper thread, set the receiver in a oven at 140C, put the rod in a freezer and tighten the crap out of it, clean the chamber and outside and good to go,
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This.
 
Well, I'd talk with a gunsmith and see if you can actually plug the holes. If you TIG the plugs in and refinish it, you'd be saving a beautiful gun.

Barring that, you can always keep a look out for a barrel/upper receiver and then pay to have it fitted. It'll be a mismatched gun, but at least it's now a shooter, and you'll still have the original parts if you want to return it to "original". There's a C96 barrel on gunbroker right now for $300, though I don't know how much of a pain it would be to import it.

I think purely from an investment perspective it's worth trying to salvage.
 
OldFrankHog said:
It would not promote it. The carbon might, to some degree, bind with the chromium in the stainless and reduce the effectiveness but it certainly would not promote the corrosion. Either way the discussion is about fixing a barrel, not the properties of different metals.
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it absolutely would, but it wouldn't be an issue keeping a gun like this clean.

however if youre welding or plugging it id go for as close to original metal as possible.
 
Drill bit have also damaged the top of the chamber.

So, for me it's a dead, dead top assembly.

It's a real shame, because this C96 is in excellent condition.
 
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