as i posted recently i bought a M9a1 22 beretta. first time i took it to the range it performed great. so great in fact that i decided to really test it. my grandsons and i scrounged up all the old 22 ammo we could find. some of it was so old that the lead was beginning to deteriorate. all in all we came up with over 550 rounds. most of it over 20 years old, we fired it all in one session without any cleaning. to my surprise it fed and fired every round without a problem. irealize that it is a full size gun but i was still very impressed.