I'm sure I have less experience with Anshchutz than allot of the guys on this forum...BUT...unless you're competing with the thing (or don't plan on shooting much)..you could always give garden-variety ammo a go and see how the gun likes it. I have an older 1450, and a relatively new 64 MPR (TT)..and ammo testing days reveal allot about a gun's preferences. I've found my 64 seems to like CCI SV ($5-ish/50), SK Rifle Match ($11/50) and RWS R50 ($30+/50) The first 3 shots I fired with the R50 @ 50 yards, I though 1 hit the paper and the following 2 might have missed it. Nope. Just made the hole a little bigger. lol Do I use R50 for that gun now? NOPE! That was the first and last time I bought a box of 22 costing that much. lol I like shooting too much to feed it caviar-grade ammo all the time, but fun to see what's possible.
CCI SV-you could cover the 50 yard groups with a quarter with the odd excellent group. SK Rifle match-sort of my go-to, and way more accurate than I need for plinking. Which is what I do mostly.
As for where to get-I hate having ammo shipped and having that cost tacked-on to my sport. However, it's a necessity depending on where you live. If I was getting ammo shipped, I'd look to Nordic first, Tesro next, etc. I shop @ Tenda, and Rangeview Sports-both CGN sponsors. I feel like I'm a bit lucky to find good ammo selection @ Rangeview (often there though) and Tenda seems to always have allot to offer.