King made a peep sight applicable for pre-war revolvers.

When it comes to such for .44 Magnums, if Doctor Cross (who has likely forgotten more than the rest of us know about .44 Magnums) seriously doubts the story you've been told, then I'm comfortable in not believing a word of it---no way---nohow!!

A wise man once said, "Buy the gun, not the story.".

Ralph Tremaine