Rechamber to cure throat errosion

[TnTom]

If a throat were eroded to the point that accuracy was being affected can it be resolved by re=chambering. I have a .243 Ruger M77 '72 flat bolt and may decide to rechamber it in .243 AI. Will re-chambering generate a new throat. Im thinking it does.
Thanks Tom

 

[Bob3700]

The bbl has to be set back in order to get into fresh bbl material.

You want to take a look at the bbl with a borescope and determine if the bbl is a candidate for the setback.

See how far up the tube the firecracking is evident. Also, look at the lands and see the amount of damage/wear they have sustained.

That would be the deciding factor. Just running an AI reamer into the existing chamber will not solve any problems.

If you have a factory bbl, you also need to see if the chamber end has enough meat left for a setback.

Bob

 

[TnTom]

Thanks Bob,
You answered my question to the letter. One more question. Is setting the barrel back the process that will determine correct head space?

 

[BoydAllen]

Yes

 

[HPMike800]

Most likely you will be better off with a new barrel. The existing barrel has alot of heat treatment on it a second chamber will wear out faster than the first one did. Set backs are often not cost effective.

Most factory barrels can't be set back anyway.