OOO,
I don't know of one in the $300 range. You might look for a used model. I've read the CZ 527s are good guns, but it would probably be hard to find one used in the $300 range. You might could find a used Rem. Model 7 or Ruger M77 in that range. It might be easier to find a used one in the $350-$375 range, though.
The Saiga is a reliable semi auto, though - and priced great.
Good luck.
Steve