I first learned of this rifle reading the article in the American Rifleman. What a great and compelling story they told. Acquiring the gun, researching the original owner, honoring the gun and its history with a documentary copy, and then sharing that work with the collecting community in the most generous fashion imaginable. Then to learn the recent story of its re-theft by the museum.
Here's what really gets my blood up: Why didn't the museum look for a private solution to the theft? Why not approach Bob and Laura, explain the situation and ask them to re-gift the rifle to the museum in exchange for the positive publicity they'd both get as well as a nice charitable tax deduction for Bob and Laura.
Instead, they involve the FBI and the collectors get their house raided like common criminals. Yes, the museum had every right to ask for their property back, but shame on the museum for not caring for it in the first place. Shame on them for involving the FBI and humiliating the current and worthy caretakers.