Loading last chamber "hot" in revolver to signal reload?
Was this ever proposed? Must have been by somebody.
Was thinking if one loaded the last chamber of their starting load with a "hotter" round (more recoil and / or muzzle blast) they would know that was the last shot and it was reload / back up gun / or flee time.
I don't see a down side. It won't hurt follow up shots, because there won't be any. If you did a partial reload you might lose track of where the "hot" round is. But that is an extremely unlikely scenario.