Originally Posted by
GJM
When new PCC designs started showing up, DocGKR basically said, unless you had a pistol caliber in full auto, stick with a rifle caliber.
I was always fascinated with the cool factor of short pistol caliber carbines, and when they became available got some. Then USPSA made PCC a provisional division and I started competing with a PCC. Leaving aside ballistics, which is Gary’s wheelhouse, my practical experience is they aren’t a first choice for use besides training, where the PCC allows you to shoot steel that you can’t with a rifle and have less noise. Watching a wide variety of pistol caliber carbines in use in competition, they are far less reliable and durable than an AR in a rifle caliber. In terms of realistic defensive scenarios, the PCC gives you almost no shooting advantage over a red dot equipped pistol, and comes with a major disadvantage in how to conceal and deploy.
In contrast, a small .300 BLK seems very useful.