A tunable broadhead for archery is disclosed. The broadhead may be formed from a blade assembly that is secured in place by a tip having an elongated engaging shaft that extends through the blade assembly and is attachable to a support base. The support base is in turn attachable to an arrow. The blade assembly may be rotated into any position before the tip is tightened such that the blade assembly is placed under compression between the tip and the support base. Once the tip has been tightened, the blade assembly does not rotate. Such a configuration enables the blades of the broadhead to be indexed relative to the fletching on the arrow and enables the blades to be oriented consistently between multiple arrows in an archer's quiver, thereby enhancing accuracy regardless of the position of the insert within the end of an arrow to which the broadhead is attached.