Do 75 meters if you can. This will produce a nice, flat battlesight putting you in the black out to 100 meters without a lot of hold under.
50 is next best and a very common distance at outdoor ranges.
25 to get on paper.
I don't shoot X-ring. First acceptable sight picture and send a round. If they're all in the 0-ring of an IDPA target they're effective shots. Cloverleaf group only means you're taking too much time to shoot.
Battlesight shooting: 90% in the 0-ring, 100% on the body. 50 yards. 100 rounds. 90 seconds including magazine changes. Offhand, unsupported. Winchester 333 bulk.