1 MOA is in the relm of possibility, but no guarantee. I got mine about a year ago, not because of tack driving accuracy, but because of extremely cheap ammunition. At the time is was really hard to find 308 and 223, and 7.62 x 39 was just coming back and about twice as expensive as it had been. I had an SVT 40 and several Moisin Nagants, so the PSL and several thousand rounds of ammunition were an easy choice. My particular rifle had been made from a kit, and the hammer was too tall, causing it to bind up while firing. The rifle was also missing the BHO device, a little spring loaded latch that holds the bolt carrier back when the magazine is empty. I shouldn't of had to mess with it at all, but I filed down the hammer and replaced the BHO, which the gun store gave me the parts for free. Light ball is the only round recommended for the PSL, and I stockpiled plenty of ammunition, in the meantime. I am so pleased with the rfiel NOW, that I took its slightly modified nameskae as my own here. IMHO, a ROMAK III is the prefect SHTF rifle and my ROMAK is accurate even with cheap ball ammo. It handles even laquered cased ammuntion without a hitch, and the availability of certain ammunition not available in other calibers is another plus, though I still need to get a hundred rounds or so of tracer. Most, but not all of the surplus is steel cored, and certain rounds, like the 7N1 is steel cored and is what is called spitzer tipped. It's not the shape but the core that is what is unique. This type of round has a hollow tip, and a sliding core. When the round hits a soft target, the core shifts into the cavity and destabilizes the bullet resulting in a tumbling motion similiar to the way a 223 miltiary round was supposed to do, only now, you have a round that can penetrate if need be and you have a bullet with twice the area and four times the energy than the 223.
Anyway. I recommend a PSL, but the price nd availability of 7.62 x 54R is higher and rarer, so that is definately a consideration. As the other guy mentioned, a DPMS 308 Long range is more likely a really accurate rifle and at just below $1000, quite a buy. To match my stock of 7.62 x 54 in 308, would cost about $8000, as compared with $800 that I spent.