The longest shot I have personally made with my 30-30 was at a cactus at 308 yards on my rangefinder. The cactus was about a 10 inch diameter in thickness, and stood at the base of a hill. My son was watching the cactus with binoculars.I aimed about 7" high and fired. The bullet hit the intended spot right on, and went through the cactus and into the hillside beyond it. I repeated this twice more with the same results. The bullets were Remington 170 grain CoreLokt.
My Marlin 30-30 was my primary longarm before this happened, but after this I too, quit thinking of the 30-30 as a 100-yard-only cartridge.
My business partner, an Arizona native, has hunted and killed many deer and javelina (a desert wild boar) for many years, using exclusively his 30-30 with iron sights.
My #2 rifle preference is my 45-70.
It would be nice to see some pictures of your country, Chris. I'm glad you are here on this forum, given what's happened between our countries recently.
MadDog