ABC thanks for the refresher, I need to dig out my 5-34.
As I recall the shape charge made a near perfect hole for the cratering charge to fit into, it was a pretty close fit, and if we were to tape C4 to the sides like in this pic it would not fit the hole. I now recall the dual priming but wasn't the charge made with a well in the top for a blasting cap for use as the primary ignition source? The dotted lines makes sense now that I have reread your reply and revisited m the pic I posted. I am pretty sure we never had those lines.
crater 2.jpg