Ok guys so I think I am going to send my sendero in and have it reamed to either a 300 RUM or 30-378. It shoots the berger 210's lights out so I am worried about messing it up to much BUT I would like to get a little more push for the 210-220 grain bullets that i am shooting. Has anyone done this or know of someone who has? What were the results? Also I was thinking of going with Score High Gunsmith in Albuquerque unless someone can recommend someone else. Can anyone comment on him?