I guess the title somewhat explains it. I've been curious for a while about how accurate a levergun could get; particularly the ones limited to flat or round-nosed bullets due to a tube magazine. For example, I know most people think of the 30-30 as a 150yd gun in the max. So my question is; if accuracy is the goal, and a lever rifle with a tubular magazine is the limitation, which would be the most accurate cartridge for long-range shooting/hunting purposes that one could pick out for it? Would it be the 30-30, 45-70, 44Mag, 35Rem, or some weird wildcat calibre?