Regarding Brass Cases--- According to several companies and reloading experts I spoke with (StarsStripes, Balistoic Products, etc) brass cases are less desirable than plastic hulls or even paper. It has to do with sloppy fit, blow by, etc. I am not an expert on this but the overwhelming advise was: inconsistent fps and poor accuracy often result from brass cases. Yet, I love how they LOOK. So much so I recently ordered sevral boxes of them loaded up with round ball from starsandstripes, just because I think they look so awesome, and I will also try shooting some of them to see for myself about this reported accuracy diminishment of barss shells to the modern plastic hulls.