Two things I need to add: I’m also sorry that this happened & applaud your guts for sharing the experience, glad you were not harmed (badly.)

However... nope, sorry folks, you cannot reliably weigh a loaded round in hopes of catching a double charge of Titegroup. You would be looking to weigh a small amount and the variance in the weight of components will usually make for a pretty wide variance across a whole bunch of rounds.

Is there -ANY- chance that it was more than just a double charge? In a progressive, it is possible that if one got a double that another got a light charge or no charge, leading to the possibility of an obstructed bore. At that point you not only have a double charge of Titegroup but you have effectively doubled the bullet weight. That wouldn’t just add to the catastrophe, it would multiply it.