The Mk.10s are close 100% going go bang aginst your target.Even the duddy mk.14s you can reduce the fails by setting them very shallow setting them for low speed and not using mag det and fire at as far from 90 AOB as you can they work much better that way well at least if you fire 6 then 3 will prob work.Other times they are craptastic hey at least your life isnt really depending on them.