Is this normal for a PPQ barrel?

[Obagual]

I absolutely love this PPQ. It is a great shooter! The one thing I have a question about is, do your PPQ's have this ring in the barrel?
http://i1092.photobucket.com/albums/i402/Augustinb15/1911%20Forum/M4Carbine/M4Carbine/PPQbarrel_zps0763a18d.jpg

The reason I ask is because it is leaving this ring on my brass, that you can actually feel in the brass on all ejected pieces. I resized a few pieces and it doesn't come out.
http://i1092.photobucket.com/albums/i402/Augustinb15/1911%20Forum/M4Carbine/M4Carbine/PPQbrass_zps37d7f15c.jpg

Am I over thinking/worrying about this? Since I reload I want to get the most out of my brass, yet have never seen this before from other manufactures.

[balance]

Yes.

Sometime around 2008, Walther started using stepped chambers on all of their 9mm pistols.

http://www.waltherforums.com/forum/ppq/24550-question-about-ring-9mm-ppq-chamber.html

[Obagual]

Thanks for the quick response!
Has anyone seen issues with brass life due to the "stepped barrel"?

[ralph]

Thanks for the quick response!
Has anyone seen issues with brass life due to the "stepped barrel"?

I haven't... I got a PPQ, and a HK P-2000 both have the same style of chamber,Also shot the same brass through my Glock. I haven't noticed anything unusual about the brass life, They resize fine, and I've had no problems, Throw'em in the tumbler, clean'em up and load away...You'll be fine..