I have a LRP, I have shot around 150 through it being concerned with its accuracy and the numerous posts about the issues with the rifle. I have started the cleaning process to help "break in the barrel" again because I saw a post saying that getting some jb down the tube really helped the accuracy, will it help who knows but I wanted to give it a try. I have removed the carbon and used sweets to do the grunt work. Then went to the jb bore past kroil and vfg pellets. Long story short after 100 strokes "there and back=1" I have one groove a sixtheens behind the crown that has a fat copper steak the width of the groove almost and about a 1/4" long. Any ideas?