Rifle brass stretches when it's shot. Cases for .223 need to be between 1.750 and 1.760 inches. If they are longer than 1.760", you need to trim your brass.
I load all of my 9mm to 1.165". That way I don't have to adjust my dies from major to minor. I've run it that long for minor in P320, G17, XD and my pre-ban Colt AR-15 9mm. Never had any problems.........yet.
I rarely deep clean my pistol barrels. I do clean the chamber and feed ramp really well. Rifles on the other hand are a totally different animal! Accuracy suffers drastically when rifles get heavy copper fouling.
I have several that do the same thing. It's only a pain when inserting the first round. If the mags otherwise run flawlessly, it's really not a big deal.