My SW99-9mm hasn't hickupped yet with 49 rounds. My problem is that I am shooting about 12"+ low at 20-25 yards using 115gr winchester clean target/range. I switched to the smallest front sight but am still 8" low at 20 yards. The manuals said it was sighted at the factory at 25 yards. Is it because I am only shooting 115gr? Any SW99-9 owners have a similar problem or is it some serious sighting problem I am doing. I am shooting at a target 1 1/2' off of the ground and resting on the hood of my car or the side of a wood 4x4 post. Pattern seems relatively tight granting I am just getting use to it. Just really low!