Hmmmmm.... this post has me thinking about a Remmy pump gun in 9.3X62.
There was an old article about reboring the Rem 760 to a 375 -06 , could not go that large as the Remington barrel sight screws were to deep wonder if the 9.3 would work. Custom barrel would be difficult
due to the way the bolt engages inside the barrel. The author of the article went to a 338-06 with the rebore,
