there are several kinds of nerve endings. Some, like the Pacinian corpuscles and the Meissner corpuscles, respond to vibration. Others, like the Krause corpuscles and Ruffini endings, respond to pressure. Some “Free” nerve endings are specific to heat and other sensations.

There is no”I’ve been shot” nerve ending. SO when that buckshot birdshot hits you your nerves don’t know what sensation to send you. In their confusion they often send a signal for “Heat”, which is why people often say a GSW burns.

I never felt too much from the buckshot birdshot I accumulated in the process of disputes over produce, but I can tell you for sure, that when Dad takes out that pocketknife and digs the shot out it’s not as gentle as it might be. All part of the learning experience, I suppose. And sitting in a bathtub soaking out bits of rock salt is not particularly fun, either.