For disadvantages, I'd expect you to pick up an extra inch or two of drift in a cross-wind, compared to the .40caliber you're using, and the smaller ball's ballistic coefficient may mean an extra inch of drop out at 100 yds. If your match shooting involves steel targets, as on a woodswalk, it can be difficult to see or hear a hit, and for novelty shoots like splitting a card you've got a little less margin for error. If you're shooting in bullseye paper matches and like to check your target during a relay, like the Territorials, you'll likely need a spotting scope to see your hits. Pros that come to mind: economical of lead and powder, no recoil. I have a high regard for .40 cal for match shooting, and can't think of any ballistic advantage a 32 would give over a 40, but perhaps others can.