I would like to know how to do this, also is this only a feature on Black Gold?
You shoot it and adjust it til it's correct.
If you are hitting left, rotate the housing out I believe.
Can't remember for certain now, but it's 50/50 you get it on the first try, if it went further than you were you know you screwed up.
Have another drink.
Adjust it back where it was and a little more.