The question is what distance I practice with my 9mm? Don't own one, so I probably shouldn't go any further. But, I do own revolvers in every caliber up to .45ACP, and every size ranging from a snub to a six inch L-frame and a couple of 4" Ns. I also have a full size 1911.
With each gun my practice routine is the same. I fire at 10 yards with the objective of putting every round within the 10 ring on a standard 25 yard pistol target. Once I've achieved that (usually after 1 - 3 groups) I move the target back to 25 yards and work on putting everything in the black (9 and 10 rings). I can't often do that, although I do occasionally, and I usually can come close. What surprises me is that on some days I'm always far more accurate than on others. Last week I was putting everything in the black with my 3" fixed sight J frame 36. I've never come close to doing that before, at least not at 25 yards. But then, when I switched over to my 4" .45 ACP Model 625 (an N-frame), my shooting was horrendous. I was consistently missing the black with 3-4 rounds out of every six shot group. That is with a gun that I consider to be among my most accurate, and which, generally, I shoot the best. Go figure.