Hello Pepe
Your barrel alignment marks are so close I would not want to say one way or the other that your barrel has been replaced or not. (especially using a picture). I made a small side by side comparison to show you why this can be so controversial a method of determination.
I did see something of interest in the one picture, when enhanced it seems to show the number 5 and maybe the number 7 to the left, could this be a 75?
Please look very closely using a powerful glass and let us know if there is something there or just a reflection. That camera you have has the ability to do this for you.
I know I have asked you before but, if that is a number at the very base of your barrel I need you to have the caliber verified, itâ??s important.
Vern
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