Bullet

(1)

A round-nosed home-made lead bullet was found between the President's undershirt and his shirt.

(2)

The lead bullet is 10.09 mm long and weighs 3.88 g. The diameter at the heel of the lead bullet is 8.10 mm.

(3)

No classic twist or typical land and groove impressions was found on the lead bullet.

(4)

Blood trace was found on the bullet, matching the President's blood sample in DNA testing.

(5)

The bullet has retained its shape with minor deformation at its heel.

(6)

There are no obvious fiber marks on the lead bullet.

(7)

White and blue``transferred fibers'' were found on the lead bullet. The white fibers are similar to some fibers on Chen's jacket, some fibers on Chen's shirt, and some fibers on Chen's undershirt. The blue fiber are similar to some fibers on Chen's shirt.

(8)

Two cartridge cases were found a few hours after the incident.¹⁵The inner diameters of the two cases are both 8.1 mm. Black powder¹⁶ residues were detected inside the cases.

(9)

Machine marks were found on the home-made lead bullet.

Sources:

(a)

(1), (2), (4), (5), (8) were announced by the authority in the days after the shooting; See for instance the report by Xie Mingjun on page A6 of China Times, March 21, 2004.

(b)

(1)-(9) are confirmed in the CIB Forensic Report [CIB1] and the Lee Committee Report [L1]. In particular, (3) can be found on p. 7 of the summary part of [L1].

(c)

There are detailed description about the deformations of the lead bullet, as well as the machine marks and other impressions on that bullet in [L1].

Remark  One concludes from the absence of rifling marks (3) that the lead bullet was fired from a smooth bore weapon. Therefore that bullet had a very low angular velocity compared with factory-made rifled firearms.