I snagged a Smith 15-22 last year and probably have 10,000 rounds through it. When I take it to the range, I go through 10 mags preloaded and another 500 round bulk pack of Wal-Mart Federal. At $14 a box, its cheap entertainment.
The copper washed tip of the Federal seems to feed better than the uncoated lead bullet of the Winchester. With Winchester, it seems I always get a feed failure from each mag. The bullet wil snag the port and bend.
Don't seem to have the same issue with the Federals.
I bought some Thunderbolt and Blazer ammo from Natchez. They had a pretty good sale going on, so I thought I'd give that a try.