I am not sure from your post just how many of the Hornady you fired, and I realize that you are concerned about the copper. But I have to ask, have you tested this load to the point that you are sure there is a problem? I can ask this question because I have been guilty of not testing loads enough in the past. [img]/ubbthreads/images/graemlins/smile.gif[/img]
By the way, you very likely know this, but if you have'nt "broken in" the barrel, you will often get a lot of fouling, and the groups while breaking in can do some wierd things. (you mentioned it is a new
I have used (and like) Sweets, CR-10 and Wipe Out and have been able to get barrels clean with all of them.