JeffB,

My brother-in-law and I both tried them last year. He shot a huge 10pt with one and hit it in the shoulder. Absolutely no penetration. Waited two hours before tracking and then looked for two days, no deer. We never found more than tiny specs of blood for about the first 100yds, and then nothing. After negative experiences with this head and Spitfires, we have both sworn off of mech. for good. That's just our experiences.

Blessings.....Pastorjim