I'm getting into higher powered stuff and borrowed a set 38mm AT cases from a friend. Unfortunately, he failed to mention that he hadn't cleaned them from the last time he flew over a year ago. I took the closures off and discovered a fired reload still in it. As you can imagine, it's not a pretty sight: the paper liner has pretty much become one with the case. I've chipped away as much as I can but it appears I'm going to have to soak it in something to get it back in usable shape.
I know the topic of cleaning cases comes up periodically but the impression I've gotten is that the previous discussions have dealt with cases that were not as grungy as this one, which is why I bring it up again.
Any advice on the best cleaner to soak it in to cut through the crud?
-Scott