Anybody got any idea the % of gun owners who won't tell some stranger who calls them on the phone that they own a gun?
That's a huge factor. Most gun owners I know are the sorts who want nothing to do with polls or surveys on any issue.
Actually, come to think of it, who even answers those things nowadays?
It also depends on how
questions are asked. I once read an article contrasting Kleck's study on DGU's vs. a similar study done by the DOJ. Kleck's study made it clear that phone numbers were generated randomly and that they didn't know the name or address of the person they were calling. Folks felt more comfortable responding to that than, "hi, I'm Jim from the Department of Justice, and we'd like to know about your guns."