RIMFIRES is a playable word

rimfire Scrabble® Dictionary

noun
pl. rimfires
a cartridge having the primer set in the rim of the shell
86 Playable Words can be made from "RIMFIRES"
   2-Letter Words (11 found)
   3-Letter Words (24 found)
   6-Letter Words (7 found)
   7-Letter Words (3 found)
   8-Letter Words (1 found)