I think I mentioned it in another thread, but I just enjoyed a range session with another cop. He's done the "high speed/tactical" work at a couple of agencies (including LAPD), and has been involved in a couple of on-duty OIS incidents. When we arrived at the LE Only range for our scheduled session, he told me he preferred to focus his range drills on no more than 7yds, since that was where the significant majority of the shooting incidents occurred.
Sure, I've known and listened to other cops who were involved in OIS incidents when slightly longer distances have been involved (up to slightly over 100ft for one of them), but those seem to be fewer in number over time. I've read of other incidents where 100yds (+/-) have been involved, and the cops have only been able to use their issued handguns. Outliers.
I've seen my former agency go from max distances of 25yds for regular quals down to 10-11yds, and then back out to 15-20yds, although instructor training continued to involve distances out to 50yds (to stress and assess quality of basic skills, if nothing else). Sometimes a tactical weapons class involving handguns would be offered where shooters were given the opportunity to shoot standard steel silhouettes at 50yds, to give them confidence in their ability to do so.
Before we built a new (shorter) indoor facility I used to normally include drills going out to 35-50yds. Again, primarily to check and assess the quality of my basic skills. I even used my issued compact guns to run through our Patrol Rifle qual courses-of-fire, which have run from 10-100yds, and then from 10-75yds. (I passed, score-wise, but I had to reload more often than the guys & gals using 30rd rifle mags.
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For the bulk of my own continued quals and training/drills? Whatever the current qual course involves (of course), but then a lot of emphasis on 1 & 2-handed shooting, with movement, from 1-7yds. The danger zone, so to speak.