I have searched through some old posts. I read about several copper loads but they weren't shot from a 1 in 9 twist barrel or I wasn't sure of their twist rate. My STW loves 180 gr Bergers, but I live in Ca. where I must use copper bullets for hunting. I really wanted to get the Barnes 168 lrx working. At 1 in 9 twist and being at 1100 ft. elevation I just couldn't get them to stabilize for me. I also tried 150 E-TIPS and 139 GMX with several different powders. 2" groups are the best I can get with any of the copper so far. The 145lrx will be my next try, but hoping someone out there with a 1 in 9 twist has a good copper load to share.