I am thinking of trying some of the XLC's in my . 280 Remington. I have cleaned the bore with some CR-10 until I get no discoloration on the patches so I feel I've got a clean bore to start with. My question is: Should I drop to a 120 grain X if I've been using a 140 grain conventional bullit. I have heard some people say you can with the Barnes because of the solid construction and the gain in velocity. If a drop is the best I will use the new X bullit since they don't have the 120 in the XLC. Any experiance? Should I stick with the 140's? Thanks!