Hey! I've seen the 162, and it is very much the same as the current Tracker II , except the 162 is a smooth bore, and the sights are finer. It is for shooting rifled slugs.
I know MSP RET would advise you to try the various slug configurations from Brenneke!
Go to cheaperthandirt.com and look up shotgun ammo from Rottweil. Try a couple boxes of the different 1oz and 1 1/4 oz slugs. But stay away from the 1 3/8 oz gold slug unles you only plan to shoot 2 or 3 rounds in one day. :eek:
You may find that they will hit very low for your sights, in which case, IF you get good groups and want to stay with that slug, you may want to do some judicious filing of the front sight, or install a lower front sight to raise POI (point of impact). Come to think of it, I think your front sight is a bead type rifle sight, meaning you would probably want to install a lower one, rather than file. The Tracker II has a flat, partridge type front sight, which lends itself to permanant adjustment with a file.
If you can find a Brenneke slug that hits for you , you will have one knockdown combination.
Next might be the Winchester or Federal rifled slugs. These are very inexpensive, and may hit
closer to Point of Aim with only minor adjustmenrts The Remington's may not shoot as well for lyou, they are a little undersized to work with Imp Cyl and Mod choke bore.
I believe the circle P mark is smply a proof or inspector's mark.
Good luck!