So your first shots a blown patches also, thought it was a quirk of my rough spots in the bore! I went to a light canvas for the first shot, it has not blown apart with moose milk on a clean barrel yet.....only been 4 or five shots..

Pillow ticking allways blows on the first shot.......second and third are fine.

When hunting, I like to leave my gun loaded......and I don't want that first patch to tear...........that is part or the reason for this search for the right lube and patch with a clean bore.