The key component that you need to finish the equation for yourself is the arrow weight. With the arrow weight and a rough approximation as to your speed you can do the KE formula to determine what level you are shooting at. Or....

...you can head over to www.bowjackson.com and use his KE calculator to see what your bow is producing. Generally speaking, 50-55 ft. lbs of KE is used as the lowest level for which most small diameter mechanical broadheads will work effectively on deer sized game.

Hope this helps.