Spotting scopes ... hmmm ... I have heard of them ... didn't have 'em when I was growing up ... we had to walk a mile uphill both ways through the snow to get to the 100 yard targets.
Actually, the range I go to is well controlled with Safety Officers. They let everyone shoot for 20 minutes...
I did it years ago. Departed from the South Rim at sunrise, jogged to the bottom, got a couple ounces of water from the river for my Dad, hiked back up to my start point in time to see the sunset.
Long, fun day.