the rcoil of the 270 grain bullet @ 1600fps from a 4.5 pound hand gun not counting the effect of the brake would be(recoil velocity-19.38fps,free recoil 26.27 foot pound) the 440 gran @ 1660fps would be(27.21fps recoil velocity,free recoil 53.73 foot pounds) this is calculated from a computer program
