Think cops are the only people that can extract an answer without any trepidation? Ever seen a flow chart of a well crafted survey? You are going to be started out with very innocuous questions leading to that. How about reverse the premise, and wonder how many that don't own a gun will say they do?
It's like after my mom passed away and I was talking with the estate attorney about getting things handled. I asked about my mom's jewelry...the attorney answered "What jewelry?"
Well..it's a paradox..if you admit to owning there could be consequences personally if the info was ever used for nefarious purposes. .if you don't and it appears to gun grabbers the number of people who own guns is low it's just more "ammo" for them use against us saying things like "gun owners are a small minority and don't represent the will of the people "..