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327 Federal Mag Ammo
The .327 Federal Magnum is a cartridge introduced by Sturm, Ruger and Federal Cartridge, intended to provide the power of a .357 Magnum in six shot, compact revolvers, whose cylinders would otherwise only hold 5 rounds. The .327 Federal Magnum is actually a super magnum having replaced the .32 H&R Magnum as the pinnacle of the cartridge diameter.