Saw RR and OLJ mention starting a single-shot thread recently. Once I saw that, I was patient. I waited for 13, 14 minutes at least before doing the deed myself.
I know this particular rifle wasn't the type y'all had in mind, but I don't have a break-action gun. So you'll have to be alright with it. At least this will get the thread going.
I, for one, would like to hear more about the BLK in single-shot configuration.