This will be my first try for antelope, and I only hunted this area once, last year was my first WY hunt. We have 15-20 mph winds today and I needed to shot the 260AI to confirm my zero before leaving tomorow. I shot a 100 yard group, then moved to the steel circles. I shot 4 at the 400 yard steel 6" circle all landed solid. I then sent 4 a-maxes to the 600 yard 10" circle and was rewarded with 4 solid hits, with about 1.5" of verticle and 4" of horizontal. Forecast sounds like slightly calmer winds where I'm hunting. I think I'm ready.