06-17-2022, 03:20 PM
I have not seen that. Not really sure what it is, if at 100 yards - but as others say, if the jackets were coming apart, you wouldn't be getting groups like that. Looks like a build-up of soot on the bullet exterior. I would not expect AA2200 to do that, but maybe something is sooted up in the barrel, getting on the bullets, and coming off on impact - is what it looks like. How do you clean your BBL? Or, it could just be some form of backsplatter from your cardboard backstop. Though if it's normal clean cardboard, I wouldn't expect that either. Kind of interesting, curious to see what you evential diagnose. I the meantime, load looks good enough for most jobs!