I have an GP100 Match Champion 357 with fixed sights. For some reason I steadily shoot low with this gun and it seems more with this gun than any other of my guns. I was wondering have any of you that have this gun have a tendency to shoot low also? Are you having to raise your front sight to get in the ten ring? I guess I need bench rest this gun to see if it is just my actions causing it. I wonder is it possible to change the rear sight to an adjustable sight? I know the model with adjustable rear sight the mounting is totally different than the fixed sight.