If you really want to read all the views and points about the Colorado 15 round mag restriction, then I suggest reading all the filings made during the legal battle:
http://coloradoguncase.org/
Lots of good points, and how they were countered.
Also, this one document that was a brief to the Governor by the AG office had been brought to my attention:
http://coloradoguncase.org/AG-brief-PI.pdf
You have to make a point to read the notes.
The AG and the Governor were very sure they covered all the arguments and that the law left NO actual or perceived loopholes to be exploited as had happened before in other states (IE California).
Richard