Originally Posted by Fish
And let's take a look at the study you provided. Pages 5-6. To start, this study consisted of 2,568 participants. They asked them where they got their guns. From those participants, roughly 60% of them said from "Stores". On top of that, they are estimating the total number of guns sold. Which they would still have no data on guns sold privately, other than what was answered from the 2500 participants. So the total number of sales is questionable. And they extrapolate the 60% results from the 2,500 participants, and applied that to the roughly 300 million total gun owners in the country. They admit in several places that their participants might be "misremembering" or they assumed that the place they bought it from was a FFL. Yeah.
Yup, it's a study. That's how studies are conducted.
You can add that as an effective caveat to the information of the study, or discount it altogether because it only involved a few thousand people and information gathering, though professionally conducted, was imperfect.
You're welcome to the former point of view, but the latter point of view discounts essentially all studies on human behavior.