MrBowhunt, no I did not. The rifle in question above, was my .243. For several years it was a tack driver. One day it started falling off and just got worse and worse. I had read an article about copper build up doing that, so, I cleaned it with Sweets. Took an entire day of cleaning to get all the copper out. When I was done, it was back to as good as new. Like I stated above, I've gone to the Outers Foul Out, and now I clean the copper out at least once a year.