I opened a new can of TB to load some 45-70, working up a load. I filled my RCBS powder measure, I keep it really clean.
As I was weighing each and every load, I suddenly started seeing crud coming out of the measure. Have no idea what that stuff is but it disintegrates when you touch it. It is also heavy.
I am trying to find the customer service link for Horaday Trail Boss powders.
