And if it was? 
It could have errors for one thing. Even if accurate it could be providing a false impression in several respects. For instance, suppose Fletcher bothered to write out 22LR in some notes and in others just wrote 22 though he meant 22LR. Many people shorten it by simply writing 22 or 22 rimfire instead of 22LR. 22 usually means 22LR, that is the most popular 22 cartridge.
Mike took this chart and said it proves some bullets were only 22 not 22LR, ignoring that the default when someone uses .22 rimfire it is 22lr. If someone means 22 short or 22 long they will say it because these cases are uncommon and even will say 22 Magnum. 22 Magnum is very popular but still not referred to simply as 22.
There is a big difference between Fletcher composing a single document that spells out 22LR for some but not others and him being inconsistent in his usage in multiple documents. In a single document there logically would be something trying to be conveyed in say 22LR for some but not all. But in various documents there is nothing odd in varying. I vary and sometimes call 22LR, 22, 22rimfire, 22rf.
I try to be somewhat consistent in my use of terms here to try not to confuse people but don't always stay in habit. For a long time I called a silencer a sound suppressor because that is the military term and term I am used to using. To not confuse I have been using the British term sound moderator and for the most part don't slip up but occasionally I do.
This often can and are taken out of context. Quite obviously Fletcher's use of "whole" is not the definition Mike wants to pretend. Mike wants to pretend he meant the entire bullet that had been inside the case was recovered. That's not true though the ones characterized as whole were various sizes and clearly had part of the lead missing. Someone would have to ask him what he meant. If we had all his testimony and documents we might know the answer but we don't have such. I have a feeling the defense figured out the answer but either Mike doesn't know or knows but doesn't care. Mike makes many claims that Jeremy abandoned because they ended up failing. Because we don't have access to everything the defense does he figures we won't know they failed let alone know why they failed.