4 mm caliber

This article lists firearm cartridges which have a bullet in the .172 in / 4.5mm caliber range.

• Length refers to the cartridge case length.
• OAL refers to the overall length of the cartridge.

All measurements are in mm (in).

Rimfire cartridges

Name	Bullet	Length	Rim	Base	Shoulder	Neck	OAL
.17 Mach 2	4.368 (.172)	18.14 (.714)	6.99 (.275)	5.74 (.226)	5.74 (.226)	4.57 (.180)	25.4 (1.0)
.17 HMR	4.368 (.172)	26.87 (1.058)	6.99 (.275)	5.74 (.226)	5.74 (.226)	4.57 (.180)	34.26 (1.349)

Pistol cartridges

Name	Bullet	Length	Rim	Base	Shoulder	Neck	OAL
4.25 mm Lilliput	4.242 (.167)	10.41 (.410)	5.029 (.198)	5.029 (.198)	N/A	5.029 (.198)	14.22 (.560)
4.6 x 30mm HK	4.496 (.177)	36.07 (1.420)	8.63 (.340)	-	8.13 (.320)	5.08 (.200)	-

Revolver cartridges

Name	Bullet	Length	Rim	Base	Shoulder	Neck	OAL
.17 Bumble Bee	4.368 (.172)	23.37 (.920)	10.36 (.408)	8.890 (.350)	8.636 (.340)	4.547 (.197)	-

Rifle cartridges

Name	Bullet	Length	Rim	Base	Shoulder	Neck	OAL
.17 Remington Fireball	4.368 (.172)	36.07 (1.420)	9.60 (.378 )	9.57 (.3769)	9.33 (.3673)	5.23 (.206)	-
.17 Remington	4.368 (.172)	45.62 (1.796)	9.601 (.378)	9.550 (.376)	9.042 (.356)	5.055 (.199)	55.118 (2.170)

See also

• 2 mm (.079 in) - 3 mm (.118 in) - 4 mm (.157 in) - 5 mm (.197 in) - 6 mm (.236 in) - 7 mm (.276 in) - 8 mm (.315 in) - 9 mm (.354 in) - 10 mm (.394 in) - 11 mm (.433 in) - 12 mm (.472 in) - 13 mm (.5118 in)
• List of cartridges by caliber
• List of handgun cartridges
• List of rifle cartridges