varminter

noun2

1. •
   A rifle designed or modified to increase accuracy so that it can be used for varmint shooting.
2. •
   One who takes part in varmint shooting.

   • Accuracy folks (benchresters, varminters, etc.) lean decidedly towards the Remington. Its tubular design allows it to be chucked in a lathe and "hot-rodded" very easily. — 1997