muzzy the only thing I will say in regards to this is I wouldn't take a head shot with a gun. If you have a deer right under your stand, odds are it will present you with a much better boiler room shot still within 20 yards tops. As others have said if you are off in the least bit you have a wounded deer that in time will die a slow death.

The Tazman aka Martin Price
Founder and President of
Virginia Disabled Outdoorsmen Club