I shot five this year useing N.A.P spitfire XP pro's 100 (Mechanicals). All were pass throughs all whent down within sight but one. I did shoot one with the ole Muzzys 125's I had laying around, the arrow whent in 4 inches with the same set up! If you get the chance try them. One of the pigs, the N.A.P whent through both armur plates on the shoulders both shoulder blades and cut through four ribs before eating the dirt. Five pigs and two eight pointers I'll never look back. EXPERMENT!