I have both the AI and the 240 wby. They are about the same. If you search on the long range hunting thread for 87 grain berger bullet test I have some loads and velocities on there for the 6-06 AI with the 87 grain berger. I would recomend trying that bullet. It has a very high BC for that weight 6mm bullet and is very accurate. We shot deer, varmints and coyotes with it and had good results. It does well in a factory 10 twist barrel. I am now using the 87 grainers from varmints to deer in several 6mm's.