That story was from July 2009. Votes for Sotomayor and Kagan were scored by the NRA. They did not endorse Harry Reid in 2010.
How are votes handled when the NRA scores a politician? Are the subtle nuances of a “would have voted gun control, but switched at the last minute” politician accounted for or just the final vote given?
If it is the latter, then the NRA report card is a sham and misleads.