You should be able to see your own hits at 1000yds. Otherwise, try another style of front rest.
If not installed, a pod lock will really help with spotting your own shots.
That's half the fun - seeing the trace and the impact at distance.
With clear glass, you will have no issue spotting your impacts on rocks with a 16X scope. 308's kick up alot of dust. I feel 24X as ideal.
Seeing bullet holes in paper is near impossible no matter the spotting scope. mirage just causes way too much distortion at that distance. A wireless TV monitor system would be fun
Any type of wind indicator is a good thing. If the trees are too low vs your bullet path, then at least the arrival area.
No matter what, you are well on your way and fun is what this is all about.
Jerry