I've had a Sportster 22LR for a while now. It has always shot "OK", but when compared to my other 22LR's it just seemed like it could shoot a little better. It wasn't bad enough for me to send back to NEF or anything, just sort of "average". I checked my scope, and put an O-ring under the forearm, but it was still just "OK". I tried many different kinds of ammo...still just "OK".
I wasn't expecting the same accuracy I get from my NEF 22WMR, 17HMR, or .223, but I was hoping that I could make it shoot a little better. I decided to give the bore a good polishing with some Flitz...and that was the ticket. Now it's much better.
Moonlitin