a big part of my jazz education was transcribing solos and then comparing them to other students transcriptions of the same piece with an instructor. it's an interesting process because there is almost always variation in the way players notate sections when the time or the harmony gets tricky.
my observation is that transcriptions of recorded music are a lot like text that tries to convey the sound of the spoken word, for example when an author intentionally spells (misspells) words phonetically to capture a speaker's accent or manner of speaking. It's an approximation that tries to split the difference between accuracy and scrutability; you want to try to capture the essence of the sound but if nobody can make sense of the words on the page then it doesn't work. So in the case of Master of Puppets, you have a sound on the record which doesn't really correspond to anything, Metallica weren't writing scores, and so if you create a transcription you have to use context and your judgement with the notation. But really the main goal is not to produce notation which is scrupulous in its accuracy but rather to have something that won't be a pain in the ass for sight readers, and if you've ever worked with something like The Real Book, its very subjective and it takes a lot of experience to know what makes some notation better than others.
my observation is that transcriptions of recorded music are a lot like text that tries to convey the sound of the spoken word, for example when an author intentionally spells (misspells) words phonetically to capture a speaker's accent or manner of speaking. It's an approximation that tries to split the difference between accuracy and scrutability; you want to try to capture the essence of the sound but if nobody can make sense of the words on the page then it doesn't work. So in the case of Master of Puppets, you have a sound on the record which doesn't really correspond to anything, Metallica weren't writing scores, and so if you create a transcription you have to use context and your judgement with the notation. But really the main goal is not to produce notation which is scrupulous in its accuracy but rather to have something that won't be a pain in the ass for sight readers, and if you've ever worked with something like The Real Book, its very subjective and it takes a lot of experience to know what makes some notation better than others.