>>2106983You can get a Maverick 88, poor man's pump shotgun, for $200.
A 10/22 is $200-$300 and is fun for innawoods plinking. You can get the takedown model with a Magpul backpacker stock (picrel) for convenient transport.
For a respectable rifle, look for a milsurp SKS or something similar for ~$300.