Sigma 150-500mm f/5-6.3 APO DG OS HSM Lens

I just bought a Sigma 150-500mm f/5-6.3 APO DG OS HSM Lens at a pretty good price. I would like to hear from anyone that either owns or has used the lens. I will use this on my D7100. Any advice or helping or set up info would be appreciated.

Just check out my Bird pic's in flight and static used this lens on both the D5100 and D7100
http://nikonites.com/project-52-s/27860-rodbenders-52-2015-part-2-a.html

http://nikonites.com/project-52-s/27339-rodbenders-52-2015-a.html

Wow! I can't wait!

Been using it for all my birding for 5 years. It wants you to shoot it at f8 or f9. Use Manual Mode with one of those apertures and Auto ISO (cap the D7100 at ISO 1600) and set your shutter speed accordingly.