Let me describe my first and last personal use of Ballistol.
October, moose camp, temperatures dropping to below freezing at night. I was camping in my tipi. I had fired off the shot that resided in my Jaeger rifle at the end of the day, and cleaned my rifle as always by flushing the bore with tepid water, dried thoroughly, and oiled with a patch and Ballistol, on the recommendation of my boss, the outfitter for whom I was guiding. He's German by birth. I wiped down the outside of the steel with the same patch, and hung the rifle on it's hooks on the dew cloth rope as usual. When I got up in the morning, it was dark, so we did the usual morning chores and ritual, fed the clients, and headed off into the boreal forest in search of Bullwinkle. We returned at noon and I went to the tipi to change into dry clothing. My Jaeger, still resting on it's perch showed light rusting along the edges of the flats on the outside of the barrel. Shocked! I ran a dry patch down the bore, and it came back with light brown oxide!! I immediately recleaned the rifle, dried as before and oiled again, this time with WD40. Over the course of the next ten days, I never fired the rifle again, and the rifle showed no more rust as it had with Ballistol.
I did not need another lesson to form an opinion about Ballistol.
Recently, one of our shooters went through pretty much the same scenario at the BC REndezvous, 'cept he was staying in his wall tent, and the temperature did not drop below freezing. He got up in the morning and found his rifle rusted, just as mine had done.
You tell me what went wrong!!!