Parker Trojan info needed!

[Pa SxS]

The OV is the symbol for Trojan grade steel barrels. The HT is not fully understood, usually found with HT over A. 3/15 is the unstruck barrel weight. Is the 12 found on the barrel lug? If so, it's a 12ga. I'm not sure of the AB2. Where is it found? Pictures would help.

[Pittypatdugan]

Save your money and buy low brass 2 3/4
Inch shells...they will work fine...I have many
of the dangerous Damascus and twist barell
Parkers that I shoot low pressure, 2 3/4 inch
shells that I load myself...no problems