Congratulations on your purchase of a Model 15-2. You will like it. My first firearm was a 15-2 that I bought new in 1967. I used it for match shooting in Longview, Texas in 1967, then at the Gator Gun Club matches at the old Boulware Springs range south of Gainesville, Florida in the late 60's and early 70's. I graduated to a Model 52-2 as soon as I could afford one, but, strangely, my bullseye scores never improved. Lots and lots of 148 gr wadcutters have gone through that 15-2, and it is as smooth and nice to shoot today as it was 44 years ago. Oh, you are probably smarter about this than I was, but be sure to treat those diamond Magnas as the gems they are. I went through Herritt's Shooting Stars and Fitz Grips and Pachmyers and had to go to eBay a couple of years ago to find correct Magnas to replace those I had used as down payment for the Pachmyers.