Have three forms of 10/22s. Standard, Sporter, and Target Use both forms of aftermarket Butler Creek and even a few Eagles. None fail to function. However, I break the mags in when new by several to a dozen reloads, using only 25 rounds. If all is well, I usually leave a round or two less than the 30 full.
For some reason the factory 10 rounders with exception of one never need a break in. Bah humbug! not as much fun as ripping off 25 or more!!!!