Right on Junho! Glad you had a good time. It almost makes up for me not getting to the range this weekend. I had to choose between shooting and football and usually shooting wins, but not when the Dallas Cowboys are involved.
That's a good first day, but I know you can get better. I noticed your groups are all to the left of center. Did you drift the front sight pin at all to accommodate? If you haven't yet, for God's sake don't use a hammer and punch like some will tell you, get a good front sight combination tool. They work like a charm.
My Romo was grouping to the right of center and after a few adjustments and replacing the front sight the improvements are significant. If you need the links again, let us know.
So when ya gettin' the next one???