When Scudder shoots Hector in the chest, a small amount of blood leaks out of the wound, and there is no blood on the blue door behind Hector. This suggests the bullet stayed inside Hector's body. Hector continues standing for several seconds, with a small amount of blood trickling. The next second, Hector drops and the front of his shirt is drenched in blood, as well as the door behind him. This suggests an explosive through-and-through shot.
(at 33:00m) When Sunny, the hooker, is thrown from bridge into the river, she is initially shown lying dead in one position along the water's edge, face-down on riverbank. In the subsequent shot, she's in an alternate position and location, more blood-soaked, and face now submerged.