Took my new to me FM High Power and Glock 17 to range both functioned flawless. Problem is me once again all my shots from 25 ft were about in the 10 to 11 o'clock range 4" grouping about 4" from center of a 9" dia. paperplate. I mark an x in center and align sights with front site just below the x. So question is what could I be doing to throw me off or am I being picky?