I shot some ammo today that I haven't seen before, in my 1991A1. They are made by Winchester, called "Winclean" these are enclosed almost entirely by brass except the tip of the lead nose, suppose to be a cleaner shooting (less lead in the air) They shot fine but seemed like my barrel was twice as hard to clean afterwards, think I can still see some brass streaks in there. Just wonderin if I'm the only one shootin these things ?