Last May, I purchased an XD-45 brand new. I noticed that it had a tendency to shoot low and a little to the left. I thought it was because the gun was not broken in. Since I bought it, however, I have put more than 1150 rounds through it - all 230 gr, FMJ, except for a single box of Speer Lawman 185 gr. TMJ. I have shot nine different types and brands of factory ammo through the gun, and all of it shoots low. I had a certified NRA instructor shoot it, and he said it was shooting a little low. Today, I went to the range, and had one of the RSOs (a good shooter) try it. He was amazed that it shot so low. It shot consistently 2" to 4" low at 7 yards. It has the original sights, which are not adjustable. My question is, what might be causing this gun to consistently shoot low, and what (if anything) can I do about it? Thanks! P.S. - I know it's not me, because I have another .45 that I shoot side-by-side with the XD, and I do not have the same problem.