I like what I hear about rocky mountain snypers and I want to try them but i don' t know if my bow produces enough K.E. to use this type of mechanical broadhead. How much is needed to use this broadhead?

its all according to your draw weight and arrow weight----go to bowjackson.com

General rule of thumb is 50#s minimum for using mechanical heads. However, with the snyper' s rearward deploying blades and cut on impact tip, you may get a way using less.