I have found that in some of my 10/22s that they have made the gun more reliable too. My theory is that they bounce the bolt forward better, giving the bolt a bit more force with which to chamber the next round.
I could be wrong.
But it doesnt matter much because just the quieter cycling is merit enough for me to buy one of these for just about every 10/22 I have ever had. And that's quite a few.