I'd recommend 8" from door opening. You have a double stud (sometimes more for outdoor lights, outlets, switches, etc. Your studs are typically 16" apart. If you aim between 8" and 12" you are more likely to find a hollow wall spot.
Of course this assumes worst case scenario in a load bearing wall. I know I'm splitting hairs, but trying to just barely miss the studs is not advisable. Fire 3 between them. Stop, listen, repeat, reload.
Great point....
That is the VERY type of feedback I am looking for and your should provide.
Keep me apprised of any other such insights.\
THANKS