Same here, Ron made me a plug also, I took my .45 Knight and .50 Optima Pro with Ron Plug in it, put them both in the freezer for 24 hrs. along with the powder and primers. Put the guns in a thick case, put the powder and primer in a small cooler also, the temp out side was around -5 or -10 below. The Knight you know will always go off, and so did the CVA Optima Pro with Ron's homemade breech plug.