Yeah, it was mostly unpleasant lugging it out there...
Not saying it'll NEVER happen but so far nothing has come back at us from 100 yds and there is nothing within 2 miles in any other direction...except more nothing...
The downward angle is never a bad idea. Ours is hanging perpendicular to the ground...mostly...may have had a flyer or two...
or three 
#7 rebar is pretty tough too!!
This is a total jury-rig job as you can see with our uber-fancy romex ties but it's held up REALLY well and so far no one has hit the support chains...[knocks on faux wood desk once again].
Not saying richochet/splashback CAN'T happen at that distance, just that it's never happened to us... so far...