Semi Wadcutter

Semi-Wadcutter (SWC)

A semiwadcutter or SWC is a type of all-purpose bullet commonly used in revolvers. The SWC combines features of the wadcutter target bullet and traditional round nosed revolver bullets, and is used in both revolver and pistol cartridges for hunting, target shooting, and plinking. A bullet with a flat-ended nose section and a full-caliber cutting shelf.

The designs of Elmer Keith are famous examples of semi-wadcutter bullets.  SWC rounds are often used for heavy loads intended either for hunting or for self-defense. Some SWC bullet designs have a smaller diameter rear end, making these bullets suitable for use with gas checks. Properly lubricated SWC bullets with gas checks are suitable for use at velocities exceeding 1700 ft/s (518 m/s), the gas check preventing leading of rifling.

Keith Style 45 SWC
Keith Style SWC with one crimping groove and one filled lubrication groove.