Quote Originally Posted by trajectory View Post
A while back I asked a question about BSA barrels & if i remember correctly one of the replies indicated that the counterbore was machined to disguise the fact that not all bores were concentric with the barrel. So I wondered if you noticed anything odd like this when you did that one.
The counterbore was also done so they could drill and tap for the front sight without being careful with not drilling through to the bore.
This is according to an article where the BSA factory was visited to follow the production of the Meteor.