Good point, being cleaner mabey the POA did change, it does'nt take much, as with a looser or tighter sabot. And about what HuntingJunkie said as to useing it in one of My Unfired ACCURA's. Since Im only gonna use one at a time, I'll order some MX CS and reclean the barrel with it and see what I come up with, as when I did the new barrel's with the MX BC I did get a silvery color from the new barrel. So I'll try in on one and see. let us know about the POA. Ron Oh, and I did clean the barrel's of the ACCURA's first befor I applied the MX BC, I wanted to get the (factory-Oil) out of it first, So the MX BC was applied to a new, clean, unused barrel.