bpbullets I have to agree with Triple Se7en on this one. A friend of mine was shooting his Mag Bolt, and wanted to try the Triple Se7en loose powder in it. He said the rifle shot great with the stuff, then being the way he is, he set it in the corner of the gun room for only two days. He said when he remembered it, he ran and looked through it, and already, there was a light film of what he called surface rust starting to form. He cleaned the rifle and then got some JB Bore Polish and said it took the stuff out. I told him if he had simply took the barrel off and ran some water down through it, it might have stopped any actions from the T-7 because it would have washed it out. He told me not to worry as this mistake will never happen again......