Well, I printed some respectable loads today at 500 and 600 yards.
Either my chrono is off by about 50fps or both ballistics programs I ran are off. I consistently hit 0.7moa high at 400, 500 and 600 yards today. I corrected with a velocity of 3100fps and things look a little more like what I was seeing in the field. Next trip I will do some fine tuning.
We found a 12" doa steel gong in the brush and set it up at 650 and had a fun time hitting it. I let a kid on the next bench over shoot the gong and some milk jugs at 400, he is hooked. Fun stuff.