That's an interesting question to which the direct answer is "no". The first thing to look at is the definition of an "outdoor" range:
So anything else is "indoor".NSRA Rules
1.10.4 An outdoor range is one that is open to the skies for at least 90 per cent of the area of the range between firing point and butts. Targets may be fired in natural or artificial light.
As there are (or were) very few indoor ranges over 25 yds/mtrs it is usually assumed that competitions shot at distances in excess of that figure would be shot outdoors. However there do seem to be a few more indoor 50m and the occasional 100yd range these days so it would be the responsibility of the competition organiser to specify in the Conditions section of their rules whether or not shooting had to take place on outdoor ranges only. If shooting on indoor ranges was permitted; the norm for 25yds; then the conditions should state this although there would be nothing to stop you shooting outdoors if you so desired.
Rutty