Yesterday was the first time I ever hunted with mechanicals,I went with the Snypers. I shot a doe broadside at 18 yards,the deer ran about 30 yards.Complete pass through and burried in ground about three inches.I have used Muzzys for 8 years and decided to give these a try.Now I know the Muzzy would have killed the deer just as fast but the convenience of the mechanicals is worth it.I cant remember how many broadhead targets I have ruined over the years with Muzzys and other fixed blade designs.