H&K Barrel Centering Bar

[KYRick]

Any comments about this from anyone who has used it. Brownell's sells it as item #391-001-000. Is it accurate enough for chambering match quality barrels, and will it fit all calibers? Any input from those that have used it is much appreciated.
Rick

 

[Pete Wass]

I have one - -

I bought from Greg Tennel when I visited his shop several years ago. Have never used it. I kinda think either a long gague pin or indicate the barrel with one of those coaxial indicaters. People have their methods that work but some seem more valid than others.