I' m a rookie so for me its over 50 % luck for sure.

Last year, I sat in a watch (that I was assigned to sit in) and only had a small window to shoot through to the other side of a hill. Be damned if a buck didn' t grunt at a doe right in the spot. So, the luck factor was huge 90%+ but the shot was a tough one. Well over 100 yards through a bunch of potential deflectors. The first shot barely went 20 feet before it hit a branch. The scond shot was true. This had to take away part of the luck factor.

Then I was on the last watch of the day. I picked this spot and sure enough a buck passed within 40 yards. I consider myself blessed, but not quite so lucky on this one, since it happened because of a drive we were doing.