Marking bullets…sharpie?

[Erict]

Some trailcams have a "time lapse" option that do not require motion to get started and the interval between pictures can be quite short, like seconds. Maybe not the best, but it is another "outside the box" option. Good luck

 

[Axlrod]

I use the sharpies and white butcher paper. I draw an aiming point on the paper with a jumbo black marker. Works very well for ladders at 600-1000 yards for me.