My experience with Remington Golden Bullets has been that they're some of the more accurate bulk 22 lr you can buy. For my money it's good stuff. It runs great in my Ruger Mark II, but the Mark II is made for standard and high velocity rounds. A lot of the new 22's have full length slides, and even though they're usually made out of aluminum it's still a lot of mass for a little 22 lr to move. Just depends on the kind of semi auto you have as to whether or not it will cycle reliably, and the manual will usually tell you if you need high or hyper velocity ammo to do the deed.