Estimated impact velocity

The lead bullet in the March 19 incident had a low impact velocity, because it was stopped by the shirt on its exit path.

• The CIB estimated the impact velocity with the jacket at approximately 180 m/sec, based on three valid shots in a shooting experiment; see 8.3.

• A team lead by Mr. Chen Hu, a former Chief Engineer at a Taiwan weapon factory conducted an experiment, sponsored by the Nationalist Party. Their result, with 40 valid shots³⁷, was announced on June 30, 2004. They put the estimated impact velocity (with the jacket) at 162 m/sec.

• Experiments by Dr. Y's group³⁸gave the ranges of possible impact velocity³⁹of the lead bullet with the jacket, with the shirt, with the undershirt, and with the abdomen respectively.
  • jacket: 181 m/sec--191 m/sec,

  • shirt: 160 m/sec--190 m/sec,

  • undershirt: 141 m/sec--161 m/sec,

  • abdomen: 118-121 m/sec.

Notice that the estimates by these three groups on the impact velocity of the lead bullet on Chen's jacket are consistent: they all lie between 160 m/sec and 195 m/sec.