The psl is a real hit or miss. 2moa is normal with wolf, you can get MUCH better groups with high quality stuff. People don't think they are accurate, I beg to differ. They are not an tigr, but you can accuratize them and make them just as good.
http://www.rifledynamics.com/services/gsr.php
I'm sending a psl out to him. Apparently (according to about 100 reviews I've read), people who send the psl to him send out a good gun, and get back an absolute BEAST. For $450, apparently is turns the psl from fun bench shooter, into something you can bet your life on. Everything I've read has said they can now shoot MOA on wolf, 2moa on surplus, and sub-moa with match. The short barrel takes away the whip and helps accuracy, along with manuverability. He REALLY works the trigger. Worth a look. I love the psl, something tells me I'm going to love it a lot more real soon.
PSL Upgrade Package: $450.00
Shorten barrel to 19"
Cut 11 degree target crown
Re-thread barrel
Uncant sights/gas block
Mod rear sight
Correct breach face
Correct bolt face
True/fit bolt carrier/locking lugs
Re-headspace and pin barrel to proper spec
Fit and adjust RSA trigger group
Fit/smooth safety
Fit Mag catch
Deburr, trigger guard, charging handle, mag catch anything else needed
Install bi-pod swivel
Sandblast and parkerize all metal parts
25yrd zero on Iron sights
Extras
Norrells Moly Resin over park: $100.00
Red Star Arms trigger group: $85.00
Aftermarket wood and Poly stocks available starting at $180.00