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Glock Design Question

Discussion in 'GATE Self-Defense Forum' started by fla2760, Jul 24, 2010.

  1. fla2760


    Aug 12, 2006
    I recently had an instructor tell me Glock .40 caliber pistols were designed around the 180 grain load. He said the Glock .40 will function best with the 180 grain load. If this is true my question is what were the Glock 9 mm pistols designed around? The 147 grain load? Thanks in advance.
  2. Mas Ayoob

    Mas Ayoob KoolAidAntidote Moderator

    Nov 6, 2005
    The Glock 22 was indeed designed around the 180 grain JHP subsonic round, because that was the only factory .40 S&W cartridge in existence when the cartridge and the G22 came out in 1990. However, as newer loads evolved, the designers kept the guns in mind, and as a result you don't see a lot of loads that won't work in popular .40s. The 165 grain subsonic has functioned fine in the .40s of the FBI, and the 165 grain full speed .40 load has functioned fine in the Glock 22s of Nashville Metro for many years, etc.

    I don't believe the 147 grain 9mm load existed, at least commercially, when the Glock 17 was on the drawing board. That gun was built for NATO spec loads, 124 grain at a healthy velocity. 115 grain loads from standard to +P+ work fine in it too.