Hi, there were countless options you could order. The custom shop proof on the barrel, the short serial number, and smooth bolt handle make me confident your rifle was from the custom shop. I have some old order guides somewhere that show some of the numerous options, but sky was the limit with the custom shop. The bare bones custom shop guns were usually super grades and had lead lapped bores,jeweled bolts and followers, unchecked bolt, and custom shop proof. Somewhere out there is a letter that is serial numbered to your rifle that lists all the options it was ordered with. I would imagine someone at Winchester would know where the copies of those letters are. I’m surprised Lenny didn’t know. If you can post a pic of the rifle I may be able to give more details because if it’s a higher grade rifle the work was most likely farmed out and you could track down who made the stock or did the metal work.

mike