Double Claw Mount Windage Adjustment

I have a byf44 with a double claw mount that shoots a little left of center. Do I adjust it with the square head screw in the rear mount as depicted in my photo? I had Schmidt & Bender rebuild the scope years ago, but I need to dial it in. I simply don't recall how.

scope adjust

Yes the square headed screw is your windage adjustment. You will have to carefully move the screw one way or the other till you rifle lines up.