I just got my 101st and spent Saturday at my local range...my 20 is virtually unchanged at 25. I did not try it at 30 but my guess is that it would be 2-3 inches lower--if that. The pins on my SDP are so stacked on top of each other I am just amazed. It is 28" 71lbs. with 355 gr Maximas. I tried all the pins at 5 yards further and found very little change until I got to the 60 yard pin...I am extremely happy with it.