i was issued an M14 in april 64, qualified with it at camp mathews shooting from 200,300,500...we were taught to use our 200 yard dope as our battle sight dope. 200 yard dope served me well for the next 4 years, 13 clicks elevation, 2 right wind, on every M14 i was issued..strange, i seem to have a problem with the right wind thingy