Heavy ball in the M44 is just a c-hair under 16 foot-lbs of recoil, my cousin and I both own m44's and after a day of shooting we both have sore arms, my wife gets bruising when she shoots mine, it still have the wood stock, the ati syntho on my cousins soaks up a lot of the felt recoil with the recoil pad. I have some awesome video and still footage of us firing at night, hurray for meter long muzzle flashes! the videos (60 fps) caught the shock wave 1/60th of a second before the flash, and again a 60th after when it rebounded from the snow!