clear.... didnt you just post this same question that i already answered in another section then? if so that would be considered spamming... not saying you are, just beware of mods is all.
refer to your other thread for the "real" answer then... as real of an answer as i can give w/ my limited knowledge.
I don't know of anyplace in Indiana that has 50BMG competitions. Youngs Longshot is the only place I know of that even allows 50BMG to be shot into the backstop.
There may be 50 cal matches at Ft Knox, but since I don't own one, I don't pay a lot of attention...