Coogs
Maximum
Nice find! Ruger produced just shy of 15,000 completed guns and/or serialized frame before they quit shipping. They then "scrapped" around 5000 of them. Yours was probably produced in early 1983. The serial number guide on the Ruger site is kinda off. I will say that your serial number is "not found" on the Ruger serial number look up. Not unusual as I have several that come up that way. Stay with 180 grain and heavier bullets on top of slow burning powders. My go to is 4227. Top strap cutting will occur, but will abate after about a 1000 rounds. Enjoy!