The KJV while accurate, does have its own issues due to translation and underlying manuscript(s) differences. To cite it as the “most / least accurate” isn’t a good claim, as it’s hugely dependent on which method you’re ranking it by. Generally speaking, as long as you’re using a word-for-word / formal equivalence translation, you’re in a good position. If you migrate to thought-for-thought or paraphrased translations however, that’s when you’ll be in a more dangerous area. It’s best to read in the original language if you have the ability to, or at the least utilizing multiple translations along with a concordance / interlinear text.