I enjoyed my last range trip too. Picked up 1000 spent cases of 22LR lying on a gravel range.. the rain made it that more charming!
If I had to recover the majority of the brass off a gravel area I'd quickly be making up some manner of brass catcher from a tarp and some socket/shock cord tent poles. You may want to look into something like that.
Come to think of it this would not be a bad idea for semi autos as well.


















































