I have been playing with coal and found that when I seated out to 2.82" I got some very good groups but I also got flyers that were consistently and inch to inch and a half high and left. I didn't get these at 2.8. I am using varget, lc brass and 175 smk bullets. Could it be the brass I am using? I have some win brass here which was giving better consistency, the LC just lasts longer in my rifle (semi).