A wadcutter is a special-purpose flat-fronted bullet specifically designed for shooting paper targets, usually at close range and at subsonic velocities typically under approximately 270 metres per se
.32 ACP full metal jacket, .32 S&W Long wadcutter, .380 ACP jacketed hollow point (L-R)
.38 Special wadcutters loaded cartridges, 148 grains (9.6 g) hollow-base wadcutter bullet and target showing the clean round holes
Keith-style SWC with one crimping groove and one filled lubrication groove. In practice, the bullet can be crimped over the leading band, or on the crimping groove, as desired.
A typical 4.5 mm (.177 in) match diabolo air gun pellet, in the HBWC (Hollow Base Wadcutter) configuration
A gas check is a gasket type component of firearms ammunition. Gas checks are used when non-jacketed bullets are used in high pressure cartridges. The use of a gas check inhibits the buildup of lead i
An AK bolt carrier/gas piston. Note the gas rings on the piston.