Instructions: select from menus in red fields. Enter characteristics mods on the right column (note: better shooting means lower stat...). Note that Heroes mounts are at least good. Click elsewhere to update calculation. Text field at bottom can be copied-pasted elsewhere.
Base on ROTK stats. 95% accuracy for normal units (100% within 1pt), 50% accuracy for heroes; variations >=10pts: Sam, Gimli, Boromir White Tower, Elrond, Arwen, Glorfindel, Elladan/Elrohir, Galadriel, Beregond, Durburz.