Thank you all for the feedback. Para, thanks for the wind deflection chart--most useful. I picked up some 178 ELD's and IMR4350 yesterday to try at the match next month. As always, I'll keep you posted.
Jon

A few more wind deflections to contemplate. Note the difference between the 220 Sierra MK and the Hornady RN at the same velocity. Google "ballistic lag time" to learn why.

Match update;
AGAIN, the Corps has cancelled our match. Seems they'll be working on the fire breaks in the impact area. Damn. I was looking forward to trying a new load.
Jon

Shot the 600 yard match yesterday. Used IMR4350 and Hornady 178 gr ELD bullets. Each string of fire had a possible of 200-20. My first string was a 104-1. Second string was a 127-0. It was a slight improvement over the 150 gr bullets and IMR4895 I used last time. I used online load data from the Nosler site. In their testing, IMR4350 was the most accurate powder tested. 42.0 grains was their most accurate load so I went with it. It only has a velocity of 2190 fps. A tad bit slow for 600 yards perhaps? Their max load is 46.0 grs of IMR4350 at a velocity of 2460 fps. Maybe I need to try a higher velocity for the longer range. What say you? We were using standard MR-1 targets. Maybe I'm just expecting too much from the old gal. Every shot however, would have hit a man-sized target.
Thanks.
Jon