Is it all magazines or just one magazine that give you failure to feed? If the last round always fails to feed then it is most likely the follower.
If it is out of all magazines then out of how many? More than 4 then you might have a problem elsewhere than the magazine.
Could be that the gun is too dry, give it a good lubing as it should almost sound silent when working the action.
If you have big hands you could be riding the slide.
Have someone else shoot the gun, if no malfunctions occur then it could be limp wristing.