Against the bestiary
Deals Compact Bullet damage. It hits Bloodskin hardest (2.2x) and Rotjaw softest (0.45x).
Killed outright by one hit
Bileweaver HeadBloodweaver HeadDoctor Grunt HeadGrunt HeadLantern or Torch Grunt HeadHellhound HeadHive HeadFirebreather Head
Two shots
Muzzled Hellhound Jaw
Three shots
Water Devil BodyImmolator Head
Four shots
Armored HeadConcertina Armored Head
Five or more
Brute WeakspotBloodskin WeakspotMeathead Upper torsoUrsa Mortis WeakspotAssassin Upper torsoSpider HeadHellborn HeadScrapbeak Upper torsoButcher Upper torsoRotjaw Weakspot
Computed from each creature's own hit-zone table against this weapon's damage type, at point blank. Falloff at range can only ask for more shots, never fewer - so a creature this weapon one-shots here may need two further out.