I have a Revelation 150 (Marlin 49 I think) semi auto with a tube magazine. Can't remember any misfires with cci ammo. Probably 1 or two misfires with thunderbolt per magazine. Have a Heritage that doesn't like thunderbolts. Also have a J C Higgins (Marlin) not sure model but single shot bolt action Short, long, Long rifle to shoot all my duds. CCI seems to work good in all of them.