Trying to figure out what's comparable to an Ace in golf has been going on here for a long time. For some, it's a 300 game or 800 series, for others it's the 7-10 or Big-4 split. For me, it's the 7-10 or Big-4, as those involve more luck than skill, anyone can do it at any time, and pros aren't any more likely to do it than amateurs. You don't hit the golf ball or throw the bowling ball expecting to get either, you just try to hit it as far as you can, you try to get count on the splits and you get incredibly lucky.
SH