I know that we really need to do this by "organised trial and error"... But at the price over here I'd like to test from a COL that worked for those who've tried them please. I've started load development with the 200gr AB in my 300WM. I've achieved 2850 fps quite easily and the loads have good ES. Nevertheless at the current COL I'm shooting patterns and not groups! I know the AB should shoot well by all accounts and from what I've seen here. I like to shoot with a jump around 0.040 and even my 210VLD's shoot lights out there, but not the AB's. Any ideas at to what you've had good results with will be welcome and maybe I can start there and save a bit on bullets whilst I get the load worked up. Thanks.