IRL where a rifle barrel settles after a shot has been fired is where you actually shot. I've pointed out in other threads before how IRL to get a good shot you make the rifle naturally point at the target, with no undue force applied. If your forcing the rifle onto a target, after the shot is fired the rifle will no longer point where you were aiming, but at where the round would have gone if you'd been shooting correctly. You actual round fired will be somewhere between where you aimed and where the rifle now points, and depending on how practiced and controlled you are depends on how near it is to your aim point as apposed to the natural aim point of the rifle.
INF can't really decide on how your body is lying and whether your forcing your point of aim or not, so the telling where you shot bit is out, but it would be nice if the rifle returned to near the aim point by its self. I know people are going to argue that thats the skill in INF, controlling the barrel climb and recoil by compensating with mouse movements, but thats not what happens IRL. We are supposed to be professional soldiers, not some bloke of the street, shooting his first M16. Controlling barrel climb and recoil is pretty much second nature by the time you've completed basic training, and the present system lets people who have developed the skill and knack to hold an AK on full auto on target for a whole drum. IRL that isn't going to happen, as you tense to control the muzzle climb, you aim is moved. As you try to compensate for that the barrel starts to climb again. Thats why the British and Austrailians used a version of the FN-FAL that didn't have an Auto setting, because its not controllerable, and why 3 round bursts are alot more accurate than spray and pray.
I've prattled enough, so I'll shut up now