Mike, I don't think we will ever know everything about these guns. I will have to recheck my catalogs as I don"t recall seeing anything other that full chokes or the adjustable choke models offered. I do know some special order work, not listed as available in the catalogs, was done. The two people who I believe are the most knowledgeable on these two models, Carl Rowe of the R&D department, and John Callahan, former Savage Historian, are not of any help now. I don't know the status of Mr. Rowe, but Mr. Callahan has retired and turned over his factory records to the Savage museum. Before I started writing my first book, I asked Mr. Callahan if he was planning on writing a book, because if he was, with the factory records he held, it would be a waste of my time to try to compete books with him. However, he did not even answer my question.