And file in the direction you want it to shoot.
On the rear sight, anyway. If it shoots high, file the rear. If it shoots low, file the front.
Peacemakers are a good example of "fixed sight" guns with built-in adjusability. They will all shoot low and left with standard for caliber loads. We file the front sight to raise point of impact to the desired level, and screw the barrel a little more into the frame to correct windage. Works like a charm. The only difference on a 1911 is that you can't screw the barrel in deeper, so the rear sight is in a dovetail so you can drift it.