.17 PMC/Aguila

The .17 PMC/Aguila, also known as the .17 High Standard, is a rimfire cartridge formed by necking down the .22 Long Rifle casing to accept a .172" diameter bullet. This cartridge was developed in 2003 by firearms maker High Standard and ammunition maker Aguila and introduced in 2004.  The introduction was ill-timed, however, coming in the middle of the introduction of two major new .17 rimfire cartridges from Hornady, which took over the .17 caliber rimfire market.

The .17 Aguila can be shot in a rifle that is chambered for .17 HM2, but not the other way around.