It depends on what you want to know..
Most CCI ammo is Blazers..total target ammo. CCI is the same Co. as Speer, which makes Gold Dots..awesome JHP's.
Aguila is pretty good stuff. I bought and backyard tested it in 9 and 40...seemed to work..but not really any different than the GD's.
I cant tell you about the barrel thing..I shot 40 rnds of each caliber and cleaned as normal....
Shoot well