Done some calculations and as Andron said, does not look promising in a feather. Using Hardox 450 with a tensile strenght of approx 140kgf/mm2, punching a hole 1mm in dia in a 5mm thick plate will require approx 1.75 tonnes, but it gets worse, you have to have a claw to pierce through, which my guess would need to be at least 10mm in cross section and getting wider the more it penetrates...the force required is progressive, so with a 10mm claw to start punching through you need at least 5 tonnes with a progressive increase in force the further you go in....