More questions
Have you had any problems with the O rings failing to release the blades when hitting soft flesh? I have heard many horror stories about O ring held blades on mechanicals. I am led to believe that the main reason NAP changed to a no O ring mechnical is failure of the O ring to roll back and release the blades
I also would think that shooting them into a target should cause the blades to open. be it a solid high density foam block or a bag target, If they don't open on those they would have a real problem with softer flesh.
I'm of the old scjool and have used fixed blade BH since the late 50's so I am leeryof the newer mechanical BHs.