I went to a range and shot 30 rounds at 100 yds.  Not bad for first time but was sporadic and consistently high!  We just used a poster board (22"x28") with black marker target mark sort of in the middle and only 3 shots were below the horizontal.  Sure is hard to "aim" when I have to shoot below the target! :)   Any suggestions or clues as to how - I shot 2 or 3 milk jugs one day 2 Sunday's ago and now thinking how in the world did I hit them when I was high (but the yardage was much shorter and maybe height was not as bad at that shorter range - i.e trajectory still going up some...).