Rifle shooting out to 400 yards +/-

[Ridge Runner]

started working on extending my range since 1981, the last few years I have been taking a couple whitetails a year at 600-800 yards, and normaly get 1 in the 1K range or beyond.
I sight dead on at 300, then dial up from there using exbal on a pda, after having tweaked the datta to fit my trajectory. I've burnt up my share of barrels and alot of ammo to get to this stage, hope the money holds out till I'm comfortable at 1 mile.
RR