Had a 6.5 284 Norma built. It shoots three 140 grain Berger bullets inside a 1/4 inch all day long. California has gone to copper only bullets and the only bullet I have found with even a somewhat ok BC is Cutting Edge Bullets. They actually sent me 24 of them for free! These were 130 grains, with a BC of 550. They recommended 25,000th's of the lans. The best I have been able to do is and 1 1/4". If anyone knows of any high BC copper bullets out there, please let me know. I am going to try 50,000th's of the lans, but I am not going to hold my breath. Any help would be appreciated!