Labradar's "quick setup and tips": 12" or less to the side and 6"- 12" in front for a 90 degree break.
Page 1 #3 shows muzzle offset
Page 2 "muzzle position" for various muzzle types
https://mylabradar.com/wp-content/uploads/2018/06/1299-4842Fx1a-quick-setup-and-tips.pdf