It may, or may not be. The 40 caliber seems to work better than the 9mm, though. If nothing else get yourself one of those new, 'drop nosed' ejectors, and an, 'H.R.E.D.' plunger rod. You should notice an improvement. As to the exact degree of improvement? I really don't know.
'Wisdom To One Is Foolishness To Another; But, Alas, A Fool Knows Not The Difference; And, The Road To Hell? ...... It Remains Well Trod By Those Who Should Know Better.'