Table 1. Velocity and impact kinetic energy data from firing of WC - 8Co core projectiles and Pindad’s standard steel core projectile again target material, alumina (Al₂O₃)

Shoot distance	Projectile type	Sample number	MASS before impact (gr)		Velocity (m/s)		EK - Impact (Joule) at 50 metre
			Projectile (± 1)	Target (± 2)	v0	v-impact (at 50 metre)
50 metre	WC - 8Co core	1	4.5	274	932.66	884.69	1,761.00
		2	4.5	274	921.19	875.01	1,722.70
		3	4.5	274	926.14	871.16	1,707.60
		Minimum			921.19	871.16	1,707.60
		Maximum			932.66	884.69	1,761.00
		Mean			926.66	876.95	1,730.43
	Pindad’s standard steel core	1	4.0	274	948.58	897.67	1,611.62
		2	4.0	274	950.81	898.57	1,614.86
		3	4.0	274	932.78	881.64	1,554.58
		Minimum			932.78	881.64	1,554.58
		Maximum			950.81	898.57	1,614.86
		Mean			944.06	892.63	1,593.69