Face facts, OP is OP, trying to pretend that X or Y or Z is a "drawback" is the kind of self delusional thinking that gets mmo designers into trouble all of the time.
Bascialy what you made is a "God himself would own this" shotgun able to fire armor peirceing ammo and mop up a cluster of hostiles without breaking mutch of a sweat.
I don't think my original post was negative or insulting, so I don't understand the tone of your response.
Clusters of hostiles are typically where the Automatic Rifle suffers the most, because you have to reload every couple of seconds. Having a 2.5 spread is a reasonable drawback when compared to some of the other high-end weapons like the Brush Gun (or the Riot Shotgun which, when loaded with slugs, has a spread of 1.225 and does 67 DAM per shot -- ignoring 10 DT if you have Shotgun Surgeon, as well). In places like Quarry Junction, the Automatic Rifle can be devastating against a single deathclaw. Drawing more than one deathclaw at a time can be fatal due to the frequency of Automatic Rifle reloads.
Late game, Tier 5 weapons are designed to be very powerful. The Automatic Rifle
is supposed to be very good. The fact that you guys are talking about using other high end weapons (like the AMR) would suggest that the Automatic Rifle is a weapon that fills a specific role in the late game, not a weapon that is a replacement for all other weapons. To be honest, I think .308 JSP has more balance problems than the Automatic Rifle itself.