Most of the posts in this thread aren't useful for determining anything as they don't have any quantifiable data nor a consistent standard of measurement.
Anecdotal data of "tackdriver", "very accurate" or "silver dollar" sized groups or rounds "stacked on top of one another" at 30 or 50 ft. tell you more about the shooter than the gun, since almost any gun is capable of that at those distances.
Even those posts with quantifiable data are only a sample of one.
And regarding an accuracy standard, for any significant accuracy testing, 25 yds. is the minimum distance as is shooting 10 round groups because literally almosty any working service pistol, if shot a sufficient amount, will stack 5 rounds on top of one another at 25 yards. I have 9mm pistols that'll shoot 5 rounds into .4" CTC in a 10-round group that measures 1.5" CTC at 25 yards. It's random chance, not precision. 50 yards is the gold standard for pistol accuracy testing, if you think you have an accurate pistol at 25 yards, you prove it at 50 yards.
Anecdotal data of "tackdriver", "very accurate" or "silver dollar" sized groups or rounds "stacked on top of one another" at 30 or 50 ft. tell you more about the shooter than the gun, since almost any gun is capable of that at those distances.
Even those posts with quantifiable data are only a sample of one.
And regarding an accuracy standard, for any significant accuracy testing, 25 yds. is the minimum distance as is shooting 10 round groups because literally almosty any working service pistol, if shot a sufficient amount, will stack 5 rounds on top of one another at 25 yards. I have 9mm pistols that'll shoot 5 rounds into .4" CTC in a 10-round group that measures 1.5" CTC at 25 yards. It's random chance, not precision. 50 yards is the gold standard for pistol accuracy testing, if you think you have an accurate pistol at 25 yards, you prove it at 50 yards.