What do you guys recommend feeding the m&p9 for HD. What kind of hollows. I loaded a mag of hst and cycled them through by racking the slide and they seem to not feed good. I use hst for all my weapons. I even cycled federal hi shok ammo and same thing. Seems like slide does not want to come all the way forward into battery after letting it go. I tried letting go and let the slide slam forward and that seemed to work decent but still seems like it should go forward more. I have to kind of tap the back to close all the way. And one round got stuck in the chamber I had to smack the muzzle of the gun on the carpet to get the slide to unlock. Are these guns picky with ammo or what????? Please help. Thanks.