Left barrel 13.1 over 13.9 right 13.3 over 13.9.
Right 1130 a C with a horizontal squiggly mark in it followed by a
vgs over a horizontal line.
Barrel flats have the shield with x on it and helmet on top then crossed guns with 2 in center then BP on shield with oval on shield at bottom
850 KGS then last in line 2865 circled.
Left barrel flat all same plus F1 with a spot over it MU and the serial number. left does not have the 850 pressure stamp
Water tables have 28 65 mark. 1 seems to over print bar but I can't be sure.
Top of barrels labeled Fca-M Ugarteburu-Eibar on right and Made in Spain on left.
That's it for readable marks.
I recognize most of the proof marks but forget the years.
In all honesty, I shoot whatever load that I could find when I was using it regularly. Most of my shells are 3/4 oz loads
I have been using it some with low volume shooting. Squirrel hunting mostly.
