No, my estimation is never off by +/- 10yds.....maybe up to 5yds. 25-30....I have no idea.... 30-35....same thing. At an indoor range, if I use my 20yd pin at 30yds on the 5 spot target, I will score a 0. It drops that far.

My arrows fly like darts and at a 20yd 5-spot I consistantly shoot in the low 290's.....