I bought a single shot model 12BVSS in .223 Remington at an internet auction. It was as I surmised an older pre accutrigger model but overall very nice shape, well cared for.
I was doing my normal procedure of measuring twist rate (1-12) and checking how far o.a.l. needed to be for various bullets to touch the lands.
Even my longest 70 grain bullet would not touch the lands before the bullet was out of the neck. Borescope exam showed that the lands for the throat were gone for about twice as far in the barrel compared to a new barrel.
I can set back the barrel face and rechamber it if needed and I have a 1-7 twist barrel ordered so I can shoot the longer heavier bullets.
I have several test loads ready for the range.
The question is, how bad would the groups need to be to justify a rechamber or how good would they have to be to to NOT rechamber?
Those that have all ready done this, I would very much like to hear about your result.