i was here a while back asking about a scope. got a 6x-20x-44 (1/8in MOA) nikon monarch for my sendero in 300 ultra. trigger is adjusted to 2.75 lbs. just have to pick up the mounts, burris double dovetail's. i want to be able to shoot to roughly 800 yards(after lots of practice) which offsets should i start with in the burris mounts so i don't have to change them later? i have a box of 220gr SMK. should i use those or buy some 240's ? this will be my long range deer gun, i have other's so this will only for field usage. which powder to start with? i currently have some retumbo and h50bmg, but am open to others. where should i start? open to suggestions on the setup also.