I recently came across a 7.7 jap that has been sporterized. The mum is ground off. This seems normal except for the fact that the owner claims it was converted to 30-06. I know the barrel is original. It is not marked in any way shape or form to indicate that it was indeed converted or chambered. The owner claims that it was converted by his grandfather who served in the Korean war. He also told me that if he had some 30-06 ammo he could make a group at 100 yards.
Does anyone know if this conversion is even possible? I know this sounds like a very stupid question
. I am just wondering if my friend is mistaken or maybe his grandfather just got ahold of a chamber reamer.