Choose a head with 1 1/8" cutting diameter with 3 blades as a Meximum size you want. Cut on contact styles would probably be better, but some good choices are the Muzzy phantom, Magnus stinger, NAP Nitron, wasp boss bullet, sonics and similar style heads. You can check out my website for some more info on choosing the right head. www.broadheadtests.com . The key is keep the cutting surface moderate to enhance penetration.