Ordered this barrel, Colt 38 Super, to send it and a Colt 80 series 9mm to a smith we all know to have it fitted and turn my 9mm to a 38 Super.
However, I've never seen a barrel throat like this.
Looks perfect... just like the one on my Colt 38 Super. I believe they have been "dimpling" the throats that way for some time now. Mine will feed any ammo I have tried.
That is similar to my .38 and 9mm ramps.
What does your 9mm barrel look like?
The 9mm bbl, colt, looks like a regular 45 bbl throat.
Looks like a typical and normal Colt 38 Super barrel to me.