Targets/coloring for 600 yards

[brian y]

I have a March 10x60x56 High Master scope I am using and can see hits on white painted steel gongs pretty good at 600yds and can see my groups but as I went longer even with that scope I had trouble seeing hits, I have one of the original Target cameras the one in the plastic ammo box, I bought it a few years back and have only now start using it but it has been outstanding seeing hits and groups at distance. I see them up for sale every now and then used for not a lot of money you might want to look out of one, I use an I-pad for a bigger picture as my eyes are not the best.