You going to have to just swallow the fact that 7.62x39 is now the same price as every other rifle caliber and continue to be the rest of your life. If you like it buy and shoot. If the price is out of reach substitute your shooting schedule with more pistol or even 22lr and make them count...
It's 3moa or less with tula steel case take that for what it is. It's favors 155g to 168g more so the 155g. I am not by any means an expert marksman and rarely shoot groups other than to zero. I have only shot tula steel case and GGG $1 a shot match so I am sure their are better factory and hand...
The Ace series supress very well the fit and finish is custom shop grade from the 4 I have owned. I have not ran it in a class yet but hopefully I will get a chance this year to to run a 2500 round weekend on this gun.
Their is a purpose to spray painting a firearm simply to match your environment so it doesn't stick out from a distance. Spray paint allows you to change your equipment to quickly match the seasons and background of your location. It's not suppose to be pretty, perfect or permanent.