A Nay vote WOULD be pro-gun.  A Yay vote WOULD be anti-gun.  What's the conflict?

Now, I believe that Clinton is a compulsive liar as much as anyone, but this isn't contradictory to the stance you say she claims.  Clinton voted that the government should not be allowed to confiscate firearms in an emergency, and Obama voted the government SHOULD be allowed to confiscate guns in an emergency.