Brass, in spite of its ability to shine after light sanding, simply can’t reflect light the way gold alloys do. Seeing it first hand under very gray storm clouds really demonstrated the increased power of the gold. Plus it never tarnishes. I’ve been told that the purer the alloy (ie 18 vs 14) the more it reflects light. For me, the trouble with all bead front sights, is the shiny spot your eye is drawn too as a false center for the front sight. Try it on a sunny day (the sight has to be in the sun) and shoot 3 rounds; then get the sight in the shade and shoot 3 more. Your groups may overlap, but you will have 2 distinct group centers. Happy T Day!