Fox: It is a rouge as you say, but the container I was referring to (both of them) is as if you've taken sand grain particles such as used in sand blasting and stirred them into the paste. My thought is that something in the product has changed somehow, by either temperature, age, whatever and caused it. Upon using it in its 'grainy' state, it just seems to be a oily paste with small particles. I'm just not going to use it, I've new on the shelf. I've tossed half drunk cans of soda pop that have been left in the frig and lost their fizz without causing any hardship, don't believe the 'bad' (IMO) JB will either.
I've never in 50 some years of reading gun magazines have ever heard of JB bore cleaner damaging a bore. Have heard many accolades from even high power bench rest shooters on its benefits. I don't use it every time I clean a particular gun, maybe use it only several times a year. Most of the time it's used in my collection of military (mostly WW2 bolt guns). Now those rifles have had a lot of copper clad ammo shot through them and patches come out green for some time. I have used other 'modern' bore cleaners. Some I detest the smell, others are no better than Hoppes, just more hype, and besides, nothing better than workin at the bench, cleaning a gun with a old time dark brown glass bottle of Hoppes, with its oder permeating the air. Sort of like reading an old issue of Sports Illustrated with a new Jack O'Connor article on shooting some rifle. Ah, thee old days. Hoppes gets the job done for me and I'm a happy camper.
For all you black powder shooters, 'No', I don't use it on any of my black powder shootin pieces. For all my smokless guns, I do use a bronze brush and solvent when needed and rarely have heavy lead fouling anymore. I use hard enough lead in my smokeless shootin guns and keep track of pressure/velocity (powder type and weight) so I don't get any more leading than possible. The only time I ever had a problem with severe leading was back in my early Police PPC and PCC shootin. Some of the 38 wadcutters used were terrible, problem solved when changing ammo, going to 38 SWC, and casting and loading my own fodder.