Inoculating trees with decay fungi may produce trees suitable for cavity-nesting wildlife. The fungi are usually associated with wounds, but climbing trees to inoculate at nest height is time-consuming, hazardous and costly. In this study, cultures of Phellinus pini and Fomitopsis cajanderi in wood dowels were inserted into specially prepared .458 calibre 300 or 400 grain bullets or 12 gauge shotgun slugs and fired into Douglas fir bolts with rifle or shotgun. Both decay fungi survived shooting into trees. Inoculation success is discussed.