Most of the time, if your standing when you get you hit, you will fall the to ground in response to the force. If you have body armor, and get shot it feels the same as getting as getting hit by an MLB fastball going 90-120 MPH to the chest. If your not wearing armor, there are several common responses, sometimes, you will get hit and not even realize it, other times, you won't feel it, because you are dead. The caliber of the shot matters just about the most of anything. 7.62 have alot of drive but kinda go straight, 5.56 that NATO and especially the US uses, are designed to tumble when they hit flesh, this is the same reason, a .22 can easily be deadly, hit the top of the leg with a shot, bullet tumbles into arties.