PROJ DECAL
PROJ_DECAL is a defineprojectile property used to set the tilenum of any decal spawned by the projectile, ie- bullet holes.
Syntax is:
defineprojectile <tile number> PROJ_DECAL <number>
Where <number> is the tilenum of the decal used. Only works with bullet projectiles.
Don't work at bullet typer projectile shoots by another actor than players.