When did Weitzman ever say it was a Weaver?
I couldn't find anything other than that statement.
I wonder if there is another affidavit that disappeared that mentions a Weaver scope.
Boone's affidavits/reports are dated 11/22, Weitzman's 11/23.
Maybe he re-did his affidavit/reports on 11/23 and the FBI sent over Special Agent Sayers to make sure he got it right.
If he did mistake the Carcano for a Mauser, or at least wanted people to think he did, the one part of the set up he wouldn't have shouldn't have got wrong, based on the detail in his description, was the Japanese made scope. IMO