The PSL are fairly accurate if using the 148gr silver tip ammo that they were designed to shoot.
Heavy loads fly everywhere, hence the 8" groups.
These are a cheaper knock off version of the Droganov Rifles.
No interchanges for parts or magazines with the SVD either.
Not a great rifle, but not bad either considering the cost vs benefit factor.
They are heavy in weight, but fairly reliable.
Remember most surplus ammo available is corrosive, and since these have more parts then a Nagant, there will be much more to clean.
Ballistically they are about the same as a 30.06 in trajectory.
There is a lot of steel core surplus ammo available in the 148gr silver tip, so cost factor is good.
There are many better medium to long range rifles available on the market, but they tend to run 2-3 times the money.
Save the money on the rifle and have more ammo, or
Buy a better rifle with less ammo.
The choice is yours:
Accuracy by volume, or accuracy.