Is this barrel cut rifled, or one of the "deep buttoned" barrels he was making in 1975?
If a "deep buttoned" barrel, you don't want it.
You can tell by looking through it at a lightbulb. If it hurts your eyes due to the horrific tight/loose/tight/loose/tight/loose condition of the bore, it was deep button rifled and is garbage. If nice and smooth, normal looking, great.