4mm M20 for indoor shooting
.22 short Developed in 1857 for the first Smith & Wesson revolver First American metallic cartridge 29 grain (1.88 g)
.22 WMR .22 magnum .22 Mag Introduced in 1959 by Winchester 40 grains (2.6 g) bullet The only successful rimfire
.22 long rifle .22 LR Developed by Stevens Arms in 1887 combines the case of the ".22 Long" with the
.22 long Introduced in 1871 .22 Long is the 2nd oldest (still used) rimfire cartridges 29 grain (1.9 g) bullet
.22 extra long Introduced early 1880's 40 gr (2.6 g) lubricated bullet .22 long rifle combined the case of the
.22 CB .22 CB Cap (Conical Ball Cap) 6mm Flobert Introduced in 1888 20 to 29 grains (1.30 to 1.88
.17 HMR .17 Hornady Magnum Rimfire Developed by Hornady in 2002 .22 Magnum necked down to .17 caliber (4.5 mm)
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