I've seen that magazine you're talking about (Shotgun News), I'll have to pick one up next time I'm at the gun store...which is, all-the-time.
Yeah, the tactical choke can be used for breaching doors- that is correct.
But, I hope I never have to use it that way. If I ever have to use my newly transformed 870P against bad guys I hope I can take them out before they baracade themselves in a room in my house.
This same shotgun I keep loaded by my bed at night. Awhile back I got thinking if I have to use it to hunt a BG down in my house the long 28" barrel can be a problem. Getting through hallways, around cornors, the BG's could try and pull it out of my hands, etc, it just seems awkward to work with. That's why I decided to do this project with my 870 that doesn't get much use...I have 2 Rem 870's. I studied the 870 Police model and duplicated it with my extra shotgun. Although the 870 Police doesn't have the Tactical Choke I opted for that barrel because it'll give versatility to my shotgun. I can take out the Tactical Choke and install a Turkey or Mod. choke for close range hunting in my yard or where ever.
I recommend this project to anyone with an extra Remington 870.
J. D. @ AI&P Tactical, LLC can help with all your needs- check him out.
I did the whole project for under 300 bucks!!