I actually went with a 60yd zero on the rifle I use for team matches (18" 556, 77gr SMKs). Based on my ballistic data, its about a dead hold to 200 and it lines up my 300yd with 2mils, 400 with 3mils and 500 with 4mils, or within .1 or .2-good enough for hold over stages. If I know the exact...