Short chambered AR barrel

[Earnhardt]

I am NOT going to name to the outfit this thread is about...I'm not about bashing the installers of our community in Forums.

Here's my problem and question....

I recently had an outfit chamber a LR308 barrel for me, with a custom reamer I own.

I have had them chamber several custom LR308 barrels prior to this last barrel, with no problems... so I felt a another barrel was going to be a piece of cake....

The completed AR barrel has the barrel extension installed, and the muzzle is threaded, BUT....the barrel was short chambered by about .750" or so....

I'm not feeling the "warm and fuzzies" about the same outfit correcting the short chambering of this barrel.... (it's a long story)

So here's my questions....

I am wanting someone else to chamber this LR308 barrel do the correct depth.... And I will pay them for it...

With the barrel extension installed on this LR308 barrel, can this short chambered AR barrel be chambered to the correct depth? I have the Go/No Go gages and the bolt head.

Will someone even want to do this, since it was not their mistake or problem?

Thanks

 

[bamban]

Is that 0.750 or 0.0750 short? If the former, that's not even comprehensible.

If the latter, I can send you my pull through reamer.

 

[Greatgrandad]

How does any reputable machinist short chamber a 308 by 3/4"?

 

[Earnhardt]

Is that 0.750 or 0.0750 short? If the former, that's not even comprehensible.

If the latter, I can send you my pull through reamer.?

??? not comprehensible... ya, that's why I'm not feeling the "warm and fuzzies" on having them make the corrections...

I would guess the chamber is .750" or so short of where it should be.

To me it looks like the chamber was headspaced off of the back of the barrel extension.

 

[Earnhardt]

Is that 0.750 or 0.0750 short? If the former, that's not even comprehensible.

If the latter, I can send you my pull through reamer.

In my searches about short chambering, I came upon a pull through reamer....

Can that be used with a hand reamer, or only a machine/lathe set up?

Because I do not have a lathe.

 

[Earnhardt]

Side view of the Go Gage in the chamber

 

[bamban]

In my searches about short chambering, I came upon a pull through reamer....

Can that be used with a hand reamer, or only a machine/lathe set up?

Because I do not have a lathe.

It has rod through the muzzle and you twist it as you you the reamer.

First take the ejector out of the bolt. You can use the bcg to push the reamer as you twist the rod. Slow rpm drill would help. Use plenty of cutting oil and clean reamer often. Plumbers cutting oil from HD or Lowes would be plenty good.

 

[Earnhardt]

So I just clamp the barrel in my barrel vise to do this?

Or do I have to use a lathe to set this up?

No T-handle is used? The "pull through" literally pulls the reamer inward?

How do I set the head space precisely?

Thanks

 

[bamban]

Send me pm with your cell phone I will call you

 

[Earnhardt]

PM sent

 

[Mike D Texas]

Tagged for interest.

 

[HRM Johnny]

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