Any extreme long range shooters here?

Looking for potential 2000+ yards plus gun, cartridge, and scope set ups. I currently already shoot a 338 edge, 7 and 300 RUM and win mag but I believe running the numbers I will run out of juice at or near 2k at my sub 1000' elevation.

My private range currently has a 1809 yard max range but I just bought more land around me and with some bulldozer and chainsaw work I think I can safely gain another 900 yards. If you could have 2700 yards for nothing but the time investment would you buy a new rifle?