On my last range trip, my primary (oldest) G19 was shooting to the right, I put it aside and switched to my secondary G19 for the rest of the session and for carry this past week. I detail stripped it during the week, didn't find anything wrong, cleaned and reassembled it.
I sighted it in today and drifted the rear sight .145" left. (Not that big of a nerd, just had the dial calipers handy.) Now both guns are shooting dead on at 15 yards. I need to find a better "shoot from a rest setup" than "rest my hands on my bag, spread my legs, scrunch down low and shoot". I got better groups standing up and taking my time than from the "rest".
I have no idea why POI shifted 3-4" to the right at 15 yards on this gun. It got a new glock barrel 2 years ago and was sighted in correctly then. Maybe the barrel just wore in a little in 2 years.
My club has added cameras on all the action bays, located on the right sight of the covered firing lines, with a radio/wifi link up to the main education building. I don't know if they are pan and tilt or just fixed wide angle lenses.
This club has allowed organized practice in the action bays, in the past they must have a certified USPSA or IDPA RO present and must be scheduled. Now, in addition, the organizers of these practices have a 18x24" sign that has their name on it with words identifying it as an organized practice, they must show it to the camera then display it prominently in the bay so that everyone can see it.
I'm guessing that some folks have been setting up unauthorized practices and running stages/scenarios that are not allowed. It sucks that because some folks skirt the rules that we now have to have the Pinkerton Eye on every bay. I understand the liability issue.
This club requires a clean background check or LTC (License to Carry) to join. You have to pass a one-on-one shooting safety evaluation from one of the designated club safety officers, attend an orientation meeting and be voted in at a general meeting by the membership. Thugs, shit stains and unsafe retards don't get in.
I always shoot from the covered firing line, ensure that target placement results in the shots hitting the lower part of the berm and follow the rules, I use to be a certified IDPA SO and a RA RSO. From now on if my target is 5" in front of the allowed distance, I'm not sure if I now need to add a "shooting while in a disguise" portion to my training. Maybe a Brock Samson mullet.
Gringop